Here's what happened when this writer did flutter kicks for a week ...
Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.
Bed exercises for belly overhang, from MA, CSCS coach Jarrod Nobbe, plus sets, reps, and form tips for a firmer core.
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