(16-10-2014, 03:52)Jaded Jade Wrote: [quote='danim' pid='133000' dateline='1412823372']With most exercises, if you cannot do 8 repetitions, the weight is too high, back off and try a lighter weight, or a safer exercise.
Once you can do 20-30 repetitions it is probably time to increase the weight.
Jade has given some great information here! The only thing I would mention is if you want to build up your butt you need to build the muscles. For growth you want higher weight / lower reps. I move up in weights when I can do 12 reps, 20-30 is just too high for building muscles. I do 8-12 reps on my lower body and as small as my boobs are I have to admit my butt is awesome.