my foot on a chair but this looks like a much better way to do it. Where do you find band that are that thick though I have never seen those at Walmart so I take it I will have to go to a sporting goods store instead. I bet they are expensive as well aren't they? This is an amazing idea and I would love to try it, do you have to have this extra strength rubber band or can you use resistance bands that you might have already? I guess I could try it and if it breaks then I will be out one band right. Thank you for this idea I have wanted to figure out a way to do a girlie chin up for a long time. This is something I have never seen before but it makes better sense than using your foot on a chair, we did that when we went through the P90X series, if you couldn't do one without assistance then you put a chair there that you could put your foot on for a boost. This makes more sense to me because you aren't using your leg actually.