Muscle & Fitness logo Muscle & Fitness

  • Workouts

    Workouts

    • Workout Routines
    • Workout Tips
    • Fitness
    • Athlete/Celebrity Workouts
    • Exercise Videos
    Find Exercises Targeting…
    • Abs and Core Exercises
    • Arm Exercises
    • Back Exercises
    • Chest Exercises
    • Leg Exercises
    • Shoulder Exercises
  • Nutrition

    Nutrition

    • Healthy Eating
    • Lose Fat
    • Gain Mass
    • Supplements
    • Performance Nutrition
    Happy and messy baker making high protien desserts
    Healthy Eating

    4 High-Protein Desserts That Will Help You Hit Your Macros

    Various Healthy Post workout foods display in a heart shape bowl for
    Healthy Eating

    Can Your Weekend Eating Habits Be Affecting Your Long-Term Health?

    A handful of blueberries containing Pterostilbene
    Healthy Eating

    Science May Have Identified the Fat-Torching Compound in Blueberries

    Salsa and chips
    Healthy Eating

    Dip Into a Better and Healthier Salsa with these 13 Options

  • Athletes & Celebrities

    Athletes & Celebrities

    • News
    • Interviews
    • Women
    • Pro Tips
    • Behind-the-Scenes
    • Videos
    Basketball legend Lebron James performing his mobility drill at 41
    Pro Tips

    The Exercise That's Keeping Lebron James Unstoppable at 41

    Female golfer Lexi Thompson getting out of the sand trap using her wedge
    Interviews

    Lexi Thompson's Ready to Drive Golf Past Its Old-School Image

    F1 Racer Kimi Antonelli celebrating his victory after winning the F1 championship
    Pro Tips

    Why staying active off-track readied Kimi Antonelli for F1 record

    Social media influencer Liam Fitzgerald dies at 29
    News

    Fitness Influencer Liam Fitzgerald Has Died at 29

  • Features

    Features

    • From our Partners
    • Active Lifestyle
    • M&F: Fit to Serve
    • Gear
    • News
    • Opinion
    Retired couple running to keep their health and longevity
    News

    Why Lifters Need Cardio for Heart Health

    WADA prohibited substances include peptides and other chemical compounds
    News

    WADA Sends a Warning to Athletes Looking for Peptide 'Loopholes'

    Diet coke on ice
    News

    Are Diet Drinks Stalling Your Weight Loss? Maybe Not So Much

    Testosterone 21 bottle
    From our Partners

    TESTOSTERONE 21: A Key Supplement To Optimize Men's Performance and Heal...

  • Anti-Aging

    Anti-Aging

    • Functional Medicine
    • Hormone Optimization
    • Recovery
    • Wellness
    Stem Cell Therapy displayed on a screen with medical equipment
    Recovery

    What Questions You Should Be Asking Before Stem Cell Treatment?

    Director of Cornucopia Events Mini Vohra, a celebrity events strategist, Director of Cornucopia Events, British entrepreneur, and former barrister
    Wellness

    Longevity Is the New Luxury: Inside the $100K Biohacking Lifestyle

    Wellness retreat attendees performing yoga at SHA wellness retreat
    Wellness

    Can Your Biomarkers Build A Vacation Itinerary?

    Elderly man placing weights on a barbell
    Wellness

    Strength Training Is the New Anti-Aging Drug

  • Flex

    Flex

    • Olympia Coverage
    • Athletes
    • Nutrition
    • Training
    • Videos
    Nick Walker Leg Press Stance
    Training

    Nick Walker's Leg Press Tweak for Olympia-winning Quads

    The Menace Podcast Michal Krizo
    News

    What’s Next for Michal Krizo After Big win in Slovakia?

    Svetlana Fedkina’s wins Tampa Pro
    Training

    Svetlana Fedkina Speaks on Her Top Six Finish in the New Fit Model Olymp...

    Brett Wilkins Upper and Lower body superset workout
    Training

    Brett Wilkin's Brutal Upper- and Lower-Body Finishers

  • Hers

    Hers

    • Workouts
    • Nutrition
    • Supplements
    • Athletes & Celebrities
    • Features
    Anita Herbert’s Back & Shoulders Smith Machine
    Hers Workouts

    Try these 6 Smith Machine Back and Shoulder Blasters

    Stephanie Sanzo glute workout
    Hers Workouts

    Five Glute Moves for Making Massive Lower-Body Gains

    Dana Linn Bailey’s lateral raise extended set
    Hers Workouts

    Dana Linn Bailey’s 'Extended Set' Trick for Superior Shoulders

    Devyn Dalton stunt double for Matt Damon on the Odyssey gives her workout tips
    Hers Workouts

    Devyn Dalton Explains the Movements that Put Her Arms in 'The Odyssey'

  • Olympia

    Olympia

    • Olympia Coverage
    • Buy Tickets
    Caesar Bacarella performing a dumbbell workout with biceps curls
    Pro Tips

    Caesar Bacarella Is Building a Fitness Empire at Full Speed

    Olympia-2019-Whiteny-Jones-Press-Conference
    Interviews

    Whitney Jones Can Break, But Can Never Be Broken

    IFBB Wellness Pro Yarishna Ayala
    Interviews

    Yarishna Ayala Shares Advice for Future Wellness Division Competitors

    2021 Mr. Olympia Top 3 winners Brandon Curry, Big Ramy, Hadi Choopin
    News

    BIG RAMY WINS THE 2021 OLYMPIA!

Subscribe to YouTube Subscribe to the Newsletter Terms of Use Privacy Policy Cookie Policy Accessibility Statement Do Not Sell
  • Workouts
    • Workout Routines
    • Workout Tips
    • Fitness
    • Athlete/Celebrity Workouts
    • Exercise Videos
  • Nutrition
    • Healthy Eating
    • Lose Fat
    • Gain Mass
    • Supplements
    • Performance Nutrition
  • Athletes & Celebrities
    • News
    • Interviews
    • Women
    • Pro Tips
    • Behind-the-Scenes
    • Videos
  • Features
    • From our Partners
    • Active Lifestyle
    • M&F: Fit to Serve
    • Gear
    • News
    • Opinion
  • Anti-Aging
    • Functional Medicine
    • Hormone Optimization
    • Recovery
    • Wellness
  • Flex
    • Olympia Coverage
    • Athletes
    • Nutrition
    • Training
    • Videos
  • Hers
    • Workouts
    • Nutrition
    • Supplements
    • Athletes & Celebrities
    • Features
  • Olympia
    • Olympia Coverage
    • Buy Tickets
  • Resources & Highlights
    • Topics
    • Videos
    • Podcasts
    • Contact
    • Terms of Use
    • Privacy Policy
    • Cookie Policy
    • Accessibility Statement
    • Do Not Sell

Stay Connected

Newsletter Signup

Stay up to date

Sign up below to receive our newest workout routines, recipes, news stories, and offers from our partners

Facebook Twitter Youtube Pinterest
Open menu button
Open search bar button
×

Search M&F

Featured Articles
Lean Muscle
Healthy Eating

28-Days-to-Lean Meal Plan

With the right plan and the right discipline, you can get seriously shredded in just 28 days.

Read article
Glamorous Hollywood actress in a black evening gown posing at a red carpet event, representing one of the hottest female celebrities in Hollywood
Women

The 25 Hottest Female Celebrities

Talented stars, killer physiques.

Read article
Bench press record holder Bill Gillespie breaking the world record at age 62
Pro Tips

The 'Dos' and 'Don’ts' of Bill Gillespie’s Record-Breaking Bench Press

At age 62, "Big Bill" shares his wisdom to dominate one of the ultimate strength marks.

Read article
The 50 Best Female Fitness Influencers on Instagram
Girls

The 50 Best Fitness Influencers on Instagram

Follow these fit women we're crushing on for inspiration, workout ideas, and motivation.

Read article
Athletes & Celebrities

5 Skinny Guys Who Transformed Into Beasts

From skinny to fit, these athletes earned fame, fortune and impressive physiques in the gym.

by James Maio
  • Click to share on Facebook (Opens in new window)
  • Click to share on Twitter (Opens in new window)
  • Click to share on Pinterest (Opens in new window)
  • Click to share on Facebook (Opens in new window)
  • Click to share on Twitter (Opens in new window)
  • Click to share on Pinterest (Opens in new window)
5 Skinny Guys That Got Jacked
View Gallery

5 Skinny Guys Who Transformed Into Beasts

Close gallery popup button
1 OF 6

1 of 6

5 Skinny Guys That Got Jacked

Sizing Them Up

Some men came into this world with a full, natural build conducive to putting on muscle almost effortlessly.  Others were not so lucky.  Guys looking to build mass and get stronger come in all different shapes and sizes, but some in particular–the naturally skinny guys–are all bound by the same cause.  Looking to make large changes and silence their critics, these guys hit the iron and barreled through their own obstacles like a freight train.  SEE ALSO: 5 Rules For Building Mass

2 of 6

Kaep

No. 5: Colin Kaepernick

You’d be hard pressed to find a guy as tall and lanky as Colin Kaepernick during his baseball years.  Pictured left, the young Kaep could have been blown off of the mound by a strong enough wind.  When Colin was drafted into the NFL, critics bashed his physique, calling him “skinny” and “light.”  The criticism fired Colin up, and he decided to put on some poundage to up his game and silence the doubters.  Over the offseason, Kaepernick would walk into the Proactive Performance facility in Los Angeles, where he would train alongside the likes of other big guys like Clay Matthews and CJ Spiller.  Now, it’s typical for Colin to train six days a week for 4-5 hours each day during the offseason.  The bulk of his regimen includes traditional weight training plus explosive resistance band movements.  One of his favorite exercises is the single-leg dumbbell romanian deadlift.  Add in a high protein diet, Colin is the shredded athlete you see today.  Colin’s impressive gains even worried his former coach, Jim Harbaugh, who ironically told Kaep not to gain “too much muscle.”  The primary focus of Colin’s training has been to build strength without the loss of speed and agility, and the mentality has served him well–we’ve all seen those gazelle-like dashes out of trouble that Colin has made his signature move on the field.  SEE ALSO: The Strength And Speed Workout 

3 of 6

Lilly

No. 4: Brandon Lilly

Brandon Lilly is one of the biggest, baddest pro powerlifters out there.  Known for developing the Cube Method for strength training, Lilly owns a raw 3 lift total (squat, bench, deadlift) in excess of 2,000 pounds.  The PR crushing beast has come a long way—the 20’s version of Brandon (pictured left) is almost too hard to comprehend.   Along the way, Lilly began to train at the famed Westside Barbell Gym under the watch of legendary powerlifter Louie Simmons.  During heavy training cycles, Lilly will eat in the neighborhood of 7,000-8,000 calories per day.   Brandon Lilly’s numbers, diet, and transformation are just hard to wrap your head around.  SEE ALSO: Westside Ways Workout

4 of 6

Hardy

No. 3: Tom Hardy

From fighting against Batman as one of pop culture’s most fearsome supervillains, to an ex-Marine MMA warrior, Tom Hardy has always been able to pack on huge slabs of mass.  To bulk up, Hardy prefers the traditional compound movements like the squat, bench and deadlift accompanied by a massive diet of nearly 4,000 calories every day.  Although generally not recommended for building mass, Tom pounded down tons of liquid calories such as shakes with ice cream, milk, and peanut butter, and he advocates that you should “eat pizza whenever you can.”  Maybe not the greatest advice, but hey, he did what he had to do to get big for his roles, and the finished product on-screen is still very impressive. SEE ALSO: Add Muscle, Subtract Fat: The Clean Bulk That Works

5 of 6

Dwightglass

No. 2: Dwight Howard

“Intimidating.” “Towering.”  “Unsettling.”  Words that some have used to describe Dwight Howard’s presence on the court.  Howard got a serious reality check when Charles Barkley told him to “bulk up.”  Howard had always dedicated his free time to the weight room, and getting into top physical shape.  Now he has a 365lb bench press to show for it, which Howard cites as his favorite lift.  For Howard, weight training has become a non-dispensable method for staying on the court and injury-free.  Standing tall at 6’9″ and moving with 265lbs of mass, Howard has become one of the best rebounders and shot blockers in the NBA.  SEE ALSO: The Bigger, Badder Bench Press Program

6 of 6

Thor

No. 1: Hafthor Bjornsson

Whether you know him as “The Mountain,” or as World’s Strongest Man runner-up, chances are that you’ve been either frightened or awe-inspired by the behemoth size of Hafthor Julius Bjornsson.  Known simply as “Thor,” among Strongman circles, Bjornsson is the mother of all skinny to huge transformations.  Thor started his journey as a lanky basketball player.  After a jaw-dropping 200lb transformation in two years, Bjornsson now stands at 440lbs.  His protein intake is through the roof–Thor routinely eats roughly 2 pounds of meat with every meal.  Bjornsson’s transformation has afforded him the opportunity to compete both in the World’s Strongest Man and international Strongman competitions, as well as an acting career.  To show for it, he holds the titles of strongest man in Iceland and 3rd strongest man in the world.  SEE ALSO: Poundstone Power: Train Like A Strongman

Back to intro

Sizing Them Up

Some men came into this world with a full, natural build conducive to putting on muscle almost effortlessly.  Others were not so lucky.  Guys looking to build mass and get stronger come in all different shapes and sizes, but some in particular–the naturally skinny guys–are all bound by the same cause.  Looking to make large changes and silence their critics, these guys hit the iron and barreled through their own obstacles like a freight train.  

SEE ALSO: 5 Rules For Building Mass

No. 5: Colin Kaepernick

You’d be hard pressed to find a guy as tall and lanky as Colin Kaepernick during his baseball years.  Pictured left, the young Kaep could have been blown off of the mound by a strong enough wind.  When Colin was drafted into the NFL, critics bashed his physique, calling him “skinny” and “light.”  The criticism fired Colin up, and he decided to put on some poundage to up his game and silence the doubters.  Over the offseason, Kaepernick would walk into the Proactive Performance facility in Los Angeles, where he would train alongside the likes of other big guys like Clay Matthews and CJ Spiller.  Now, it’s typical for Colin to train six days a week for 4-5 hours each day during the offseason.  The bulk of his regimen includes traditional weight training plus explosive resistance band movements.  One of his favorite exercises is the single-leg dumbbell romanian deadlift.  Add in a high protein diet, Colin is the shredded athlete you see today.  Colin’s impressive gains even worried his former coach, Jim Harbaugh, who ironically told Kaep not to gain “too much muscle.”  The primary focus of Colin’s training has been to build strength without the loss of speed and agility, and the mentality has served him well–we’ve all seen those gazelle-like dashes out of trouble that Colin has made his signature move on the field.  

SEE ALSO: The Strength And Speed Workout

 

No. 4: Brandon Lilly

Brandon Lilly is one of the biggest, baddest pro powerlifters out there.  Known for developing the Cube Method for strength training, Lilly owns a raw 3 lift total (squat, bench, deadlift) in excess of 2,000 pounds.  The PR crushing beast has come a long way—the 20’s version of Brandon (pictured left) is almost too hard to comprehend.   Along the way, Lilly began to train at the famed Westside Barbell Gym under the watch of legendary powerlifter Louie Simmons.  During heavy training cycles, Lilly will eat in the neighborhood of 7,000-8,000 calories per day.   Brandon Lilly’s numbers, diet, and transformation are just hard to wrap your head around.  

SEE ALSO: Westside Ways Workout

No. 3: Tom Hardy

From fighting against Batman as one of pop culture’s most fearsome supervillains, to an ex-Marine MMA warrior, Tom Hardy has always been able to pack on huge slabs of mass.  To bulk up, Hardy prefers the traditional compound movements like the squat, bench and deadlift accompanied by a massive diet of nearly 4,000 calories every day.  Although generally not recommended for building mass, Tom pounded down tons of liquid calories such as shakes with ice cream, milk, and peanut butter, and he advocates that you should “eat pizza whenever you can.”  Maybe not the greatest advice, but hey, he did what he had to do to get big for his roles, and the finished product on-screen is still very impressive. 

SEE ALSO: Add Muscle, Subtract Fat: The Clean Bulk That Works

No. 2: Dwight Howard

“Intimidating.” “Towering.”  “Unsettling.”  Words that some have used to describe Dwight Howard’s presence on the court.  Howard got a serious reality check when Charles Barkley told him to “bulk up.”  Howard had always dedicated his free time to the weight room, and getting into top physical shape.  Now he has a 365lb bench press to show for it, which Howard cites as his favorite lift.  For Howard, weight training has become a non-dispensable method for staying on the court and injury-free.  Standing tall at 6’9″ and moving with 265lbs of mass, Howard has become one of the best rebounders and shot blockers in the NBA.  

SEE ALSO: The Bigger, Badder Bench Press Program

No. 1: Hafthor Bjornsson

Whether you know him as “The Mountain,” or as World’s Strongest Man runner-up, chances are that you’ve been either frightened or awe-inspired by the behemoth size of Hafthor Julius Bjornsson.  Known simply as “Thor,” among Strongman circles, Bjornsson is the mother of all skinny to huge transformations.  Thor started his journey as a lanky basketball player.  After a jaw-dropping 200lb transformation in two years, Bjornsson now stands at 440lbs.  His protein intake is through the roof–Thor routinely eats roughly 2 pounds of meat with every meal.  Bjornsson’s transformation has afforded him the opportunity to compete both in the World’s Strongest Man and international Strongman competitions, as well as an acting career.  To show for it, he holds the titles of strongest man in Iceland and 3rd strongest man in the world.  

SEE ALSO: Poundstone Power: Train Like A Strongman

's>
Topics:
  • Bodybuilding
  • Inspiration
  • Sports
  • Strength Training
Author picture
Written by James Maio
Related Articles
Nick Walker Leg Press Stance
Training

Nick Walker's Leg Press Tweak for Olympia-winning Quads

Basketball legend Lebron James performing his mobility drill at 41
Pro Tips

The Exercise That's Keeping Lebron James Unstoppable at 41

Newsletter Signup

Stay up to date

Sign up below to receive our newest workout routines, recipes, news stories, and offers from our partners

Muscle & Fitness logo

Follow us

Facebook Twitter Youtube Pinterest

More news

Basketball legend Lebron James performing his mobility drill at 41
Pro Tips

The Exercise That's Keeping Lebron James Unstoppable at 41

The NBA legend continues to put in the work to continue performing at peak levels.

Read article
Female golfer Lexi Thompson getting out of the sand trap using her wedge
Interviews

Lexi Thompson's Ready to Drive Golf Past Its Old-School Image

The new WTGL's fast-paced team format will show fans the personality the golf star sometimes keeps under wraps.

Read article
F1 Racer Kimi Antonelli celebrating his victory after winning the F1 championship
Pro Tips

Why staying active off-track readied Kimi Antonelli for F1 record

The youngest Formula 1 champion hones his body and mind to keep ahead.  

Read article
All Athletes & Celebrities
  1. Home
  2. /
  3. Athletes & Celebrities
  4. /
  5. 5 Skinny Guys Who Transformed Into Beasts
Muscle & Fitness logo
  • Workouts
  • Nutrition
  • Athletes & Celebrities
  • Features
  • Recipes
  • Topics
  • Videos
  • Exercise Videos
  • Podcasts
  • RSS Feed
  • Buy Olympia Tickets
  • Archives
  • Sitemap
Facebook Twitter Youtube Pinterest

Newsletter Signup

Stay up to date

Sign up below to receive our newest workout routines, recipes, news stories, and offers from our partners

JW Media, LLC

Copyright 2026 JW Media, LLC, parent company of Muscle & Fitness. All rights reserved.

Contact Us Terms of Use Privacy Policy Cookie Policy Do Not Sell Accessibility Statement