I think 4 times a week is probably okay. I wouldn't do any more because I would save that for if you get into a stall. Personally, I would go 5 - 6 times a week for two weeks if I was in a stall to boost my metabolism, then go back to what I was regularily doing.

Just my personal opinon tho'. But 4 times a week versus 3 times, I wouldn't worry.

Alena.