The plank-to-frogger exercise is a full-body extravaganza, hitting many major muscle groups at once, says fitness expert Lacey Stone, who uses it on her Extreme Bootcamp app for iPhone and iPad.
What it does
The plank-to-squat combo works your abs, quads, calves and shoulder stabilizers, and it gets your heart racing.
What to do
Put your hands on the floor in front of you and extend your legs straight back into a plank or upper push-up position, with your body in a straight line from your head to your toes and your legs the width of your exercise mat.
From there, hop forward with both feet, lowering your bottom between your legs and your weight back into your heels as your hands come up to prayer position at the heart with your head up and shoulders back. Put your hands back on the floor and jump back into plank position. Repeat.
Beginner to intermediate exercisers should try a modified version of this move, adding another hop midway back to your hands before jumping again and lowering into the prayer squat. Double-hop your way back to plank. Repeat.
Do three sets of 10 to 12 repetitions.
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