28-Days-to-Lean Meal Plan
With the right plan and the right discipline, you can get seriously shredded in just 28 days.
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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.
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Girls
The 50 Best Fitness Influencers on Instagram
Follow these fit women we're crushing on for inspiration, workout ideas, and motivation.
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Open search bar button
×
Search M&F
Featured Articles
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
Girls
The 50 Best Fitness Influencers on Instagram
Follow these fit women we're crushing on for inspiration, workout ideas, and motivation.
Read article
Abs Exercises
Swiss Ball Jackknife
- Skill Level Intermediate
- Type Strength Training
- Equipment Swiss Ball
- Body parts Abs, Hips, Obliques
The Swiss ball jackknife is a core stabilizing exercise that improves balance, strength, and flexibility throughout the hip and abdominal region.
Instructions
-
Get into a pushup position with hands on the ground shoulder-width apart and shins resting on a Swiss ball. Brace core. Form a straight line from your shoulders to your feet.
-
Roll the ball inward bending the legs and pulling it with your feet until your thighs touch your stomach. Roll the ball back to the starting position.
Trainer’s Tips
- Do not allow your hips to sag throughout the movement.
Routines with this exercise
Workout Routines
The Best Abs Workout for Beginners
Get a ripped six-pack with this high-intensity workout finisher.
45 min
6
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