Supine Abs Carousel
Lie faceup on floor, chest and shoulders lifted, hands clasped behind head. Lift legs to 90 degrees, toes externally rotated.
Exhale to lower legs to 45 degrees (as long as you can maintain a neutral spine). Inhale, pulling heels in toward hips and spreading knees in a reverse frog kick. Send legs back up to 90 degrees, squeezing inner thighs together as you extend upward. Do 10 reps.
C. Reverse the motion: Pull heels down and spread knees, extend legs out to 45 degrees, then lift back to 90 degrees. Do 10 reps.
Elevating legs increases circulation to the heart and prevents blood from pooling in the legs during long bouts of sitting. Plus, core engagement prevents low and mid-back compression and soreness from long periods of sitting