21 days fix extreme
How much more difficult is 21 days fix extreme as opposed to 21 days fix? Is it a nice progression, or is it a very big step? I’ll soon be finishing 21 days fix and I really enjoy it. I modify some of the exercise (the ones with jumps, I hate jumping even tho I’d be able to…I feel it hurts my knees without adding much to the work out?) but I’m able to follow everything else even if it’s slightly challenging.