Fitness: Abdominal Exercises You Can Perform While Sitting

Desk-Bound Exercises
1. While sitting in a chair, have your students cross their arms then lift one leg and touch the opposite elbow to that knee as they are lifting it (See “A”). Repeat with the other knee and elbow and continue for at least 10 repetitions. For additional resistance, instruct them to hold their hands behind their head.

For progression, they can lift the feet, then pull the knees in towards the chest in a crunching motion.
Reference: Peter Nielsen, “Peter's Principles.” WDIV Detroit (NBC), Weekend Today, March 28, 2004
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