Thor said:
I did some research online and on youtube and found different recommendations as to how much you should stretch the tape, ranging from 25% to 75%. I settled for the max recommendation (note to self; somehow I always end up doing that!) and it feels like it is too much as the skin feels sore. :(
Bad move. Trust me, it really works if there is almost NO stretch on it at all other than the natural extending that comes with applying it.
When I did my back, I used two or three patterns at once, one on top of the other. No stretch. It worked great.