The Knee Tuck or Jackknife is a challenging exercise that works your body from head to toe. The exercise is somewhat similar to Rollouts, requiring your lower abdominals to contract isometrically, stabilizing your spine.
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How To:
Have sex on a Swiss Gym Fit-Ball (sexercise)
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Practice proper chest focused Gravitron machine dips
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Do stability ball lower back extension with thrusts
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Train your core with gymnastic rings
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Do ab rockers
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Workout with resistance bands and exercise ball
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Do a medicine ball squat thrust with a wall rebound
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Exercise with a thigh master
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How To:
Start a wrist powerball using the thumb technique
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How To:
Do bench-dip exercises to increase your arm strength and size
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How To:
Use a stability ball for seated alternate cable rows
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How To:
Do real hanging alternate twisting knee tucks
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How To:
Do a standing chest fly
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How To:
Practice wide grip pull ups for upper body strength
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How To:
Use a rowing machine
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How To:
Improve balance and coordination using a balance ball
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How To:
Improve balance and coordination with a wobble board
-
How To:
Sculpt your core and shoulders with a prone row
-
How To:
Do advanced side-lying leg work on a Pilates Reformer
-
How To:
Do wide grip pull ups on Gravitron with slow negatives
-
How To:
Have sex on a Swiss Gym Fit-Ball (sexercise)
-
How To:
Practice proper chest focused Gravitron machine dips
-
How To:
Do stability ball lower back extension with thrusts
-
How To:
Train your core with gymnastic rings
-
How To:
Do ab rockers
-
How To:
Workout with resistance bands and exercise ball
-
How To:
Do a medicine ball squat thrust with a wall rebound
-
How To:
Exercise with a thigh master
-
How To:
Start a wrist powerball using the thumb technique
-
How To:
Do bench-dip exercises to increase your arm strength and size
-
How To:
Use a stability ball for seated alternate cable rows
-
How To:
Do a standing chest fly
-
How To:
Do real hanging alternate twisting knee tucks
-
How To:
Use a rowing machine
-
How To:
Practice wide grip pull ups for upper body strength
-
How To:
Improve balance and coordination using a balance ball
-
How To:
Improve balance and coordination with a wobble board
-
How To:
Sculpt your core and shoulders with a prone row
-
How To:
Do advanced side-lying leg work on a Pilates Reformer
-
How To:
Do wide grip pull ups on Gravitron with slow negatives
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