Here we present, as seen in the July 2004 edition of YM, the Ultimate Butt Lifter.
Starting position: Get on all fours with your back flat and your abs tight.
The move: With your foot flexed and facing the ceiling, lift your leg and maintain a 90 degree angle at the knee. Slowly raise it as high as you can (and then bring it down again) while keeping the angle and making sure your hips are square. Repeat with the other leg.
Reps: Do three sets of 12, twice a week. For extra intensity, hold your leg up and pulse 12 times on each side for one set. You should start to see results in about two weeks.
(Tip from Celebrity trainer Kacy Duke from New York City's Equinox Fitness Clubs)
Not wanting to recommend an exercise that was not tried and true, we followed the two week program faithfully. An improvement in firmness was visible in two weeks, with more improvement as we continued. This exercise is very simple, not very time consuming, and makes a difference.
So what are you waiting for? Improve!