it's lower body day for me. I am new to this move and have been looking for one that won't engage and overly develop my thighs - this is it! I managed to eek out 75 of them (I took breaks but was determined to do 75). I can hardly walk now but my buns will be steel.
Hooray no more squats !
Diamond leg lifts!
http://www.glamour.com/health-fitness/2008/02/butt-exercise/5