i know a couple that make your butt all sore the next day! i don't know what they're called, but i take a body sculpting class and do these, and definitely notice a difference!
- get on all fours, and with your left leg, raise it and make a 90 degree angle, and push it upwards, up and down, up and down. i do about 2 sets of 20 reps. then, after those two sets, lift that left leg high, and hold it there for 15 seconds. do the same thing with your right leg.
another one i do is kind of similar
-get on all fours, lift your left leg straight out, and raise and lift it high, keeping your leg straight. do about 2 sets of 20 reps. then, you raise it half way, and raise your leg all the way, bring it back down half way, and bring it all the way down. 2 sets of 20 reps. then lift your leg high, keeping it straight, and hold it there for 15 seconds. do the same with your right
i hope those made sense! i'd take pictures for an example, but my camera is broken