Why it rocks: The sky’s the limit when leveling up the back squat because this setup allows you to grab your heaviest dumbbell or load up the barbell ... then jump feet back into a high plank ...

Place a barbell across your upper back and shoulders ... For a conditioning challenge, try doing jump squats for 30-second intervals with 30 seconds of rest between sets. Aim for 4 to 6 sets ...

How: Lie back on the floor holding a barbell above you with a shoulder-width, overhand grip. Breathe in and lower the bar ...

Jump straight up, achieving triple-extension ... How to Do It: Set the rack at about waist height. Squat down to get the barbell into the crux of your elbows. Make sure your upper arms ...

Want to build more leg strength, muscle and power? Look no further than the barbell back squat and leg press, two compound exercises that promise to give your lower body muscles a run for their ...