Let's start with a countdown warm-up of jumping rope and some ab work. Starting with 10 reps of each movement, do one less rep each round. So if you do 10 double-unders and 10 sit-ups, the next round you'll do nine of each, then eight, then seven, and so on.
Complete 10-9-8-7-6-5-4-3-2-1 reps of:
- Feet-Anchored Sit-Ups
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