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When done with proper form, squats tone your quadriceps, hamstrings and glutes. Learn how to do a squat, plus squat ...
When these muscles aren’t properly conditioned, executing proper form on a sit-up is nearly impossible. If you’ve just begun ...
Sit-up to crunch to plank ... Choose a weight that challenges you but allows for proper form to avoid injury. Watch Lindsey ...
I swapped out the usual sit ... up lowering the weight to get through the full circuit. Choosing a heavier weight can make an exercise feel more challenging, but if it compromises your form ...