Resistance bands...I looked at the sticky at the top and noticed that I need several different bands to do different workouts. I ordered this red bad
from Amazon.com and they refer to it as "medium". Can a moderator or someone tell me the sizes I need in order to do which exercise? very heavy, heavy, medium, light...I was reading in that thread that not all colors mean the same thing and it goes by brand. I'm lost. Help!