Build Muscle

Gain Mass

Warrior's Workout Diet

Decorated military vet Tim Kennedy serves up his top 10 nutrition principles.

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Arm Exercises

The New 21s - Explosive Arm Growth

Spark new muscle growth with a new twist on an old-school classic.

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Workout Tips

Resisted Pull-Up for Added Muscle

Replace the weighted belt with a band for more muscle and strength.

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News

M&F and Jacked-In-A-Box Support Hire Heroes USA

Join Jacked-In-A-Box by 9/5/13 and help Hire Heroes USA create job opportunities for veterans.

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Build Muscle

Brian Stann's Supplement Stack

Our June shipment included a full range of award-winning protein and workout supplements from Optimum Nutrition.

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Build Muscle

Inside the August 2014 Jacked-in-a-Box Sample Box

In August 2014, M&F Editors picked these supplements for Jacked-in-a-Box members to try.

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Workout Tips

Attack Your Back With Eccentric Moves

Put your back development into overdrive with slow, eccentric movements.

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Workout Routines

Thruster Up for A Full Body Blast

Use this CrossFit staple to hammer your beach muscles and improve conditioning.

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Workout Tips

Make Small Tweaks for Bigger Muscle Gains

Destroy plateaus by making these small tweaks to your favorite lifts.

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Shoulder Exercises

Bust Out Some Bigger, Stronger Delts

The key to building and strengthening your delts is to treat your shoulders better.

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