Easiest is not the word, lets use, least toughest, cause each is a really tough workout!
But if I had to choose, I'd say Cardio & Weights I found the kindest. But then again, that was the first workout I did after a day off, so that might account for something! Imax 2 almost had me reaching for a portable oxygen tank this morning!
Donna
Fitness~It's a journey, not a race!