The Pike Scull exercise works your abs, core, hips, and arms. Do as many reps as you can in 30 seconds, rest, then repeat.
Slim Down in a Splash! Pike Scull: Your aim here is to keep this V position as you tread. If you feel your toes dipping below the waterline, then tighten your abs and widen the V to keep your toes nice and dry.
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