Prev pinner says "pilates flexibility workout routine- hold each pose for 30 seconds". This looks more like yoga to me but worth a shot.
Lying on your back, lift your legs straight up. Draw your heels near while bending your knees slowly. Then tense your muscles to extend your knees again. Do 3 sets …
Get Your Sexiest. Body Ever!…Without crunches, cardio, or ever setting foot in a gym!
Glute, Hip and Thigh Exercises: Bent-Over Leg Lifts