ピーター・ノース

Next, raise your legs off the floor with your feet together. Now open and close your knees

in this position and do as many of these as you can.

Now stand up and find a solid object about waist height. Keep your legs and arms straight,

take a deep breath and perform a series of pelvic thrusts, forcing your pelvis upward

at the end of each forward movement. Do about 40 of these each session. Now rotate your