Good tutorial on Double Unders. I've posted this before, but it may those of you who haven't seen it.
Skill: Between you and your partner, accumulate a total of 5:00 in an L-Sit.
- 20 Double Unders and 1 Abmat Sit Up
- 19 Double Unders and 2 Abmat Sit Ups
- 18 Double Unders and 3 Abmat Sit Ups
- 17 Double Unders and 4 Abmat Sit Ups
so on and so forth until...
- 1 Double Under and 20 Abmat Sit Ups
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