6 Quick Plyometric Exercises
Move 4: Jumping-Jack Planks
(A) Begin in high plank.
(B) Keeping your abdominals tight and body straight from head to heels, jump your feet out wide and back together, landing softly on your toes. Repeat for 45 seconds, then rest for 15.
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So maybe you can’t change your health overnight. But you can get a head start.