How To Do Cross Fitness Sit Ups: Dale Collison Fitness Training Serie
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Another way of making sure you hit these standards is you can use your hands. Go back and touch the floor, and come all the way up and touch your feet. So you're getting that full range of motion.
Some modifications:
You can face the wall and put your toes into the wall and that will help support you.
Other options include tucking your toes under something like a couch or having someone hold your toes.
Dale Collison
CrossFit Duluth
Hermantown MN 55811