Exercise of the Week: Alternating Arms/Legs Extension

Difficulty: Moderate to Advanced

Start: Lie on back with arms relaxed overhead. Position exercise ball between ankles so it can be lifted off floor. Keep legs bent to approximately 90 degrees.

Exercise: Holding ball between ankles, bring knees toward chest. Reach for ball and take into hands. Return arms and legs back to starting position. Perform same movement, this time returning ball between legs. Return to starting position. Repeat 10-15 times.