
Originally Posted by
ascendant
clen will affect a persons cardio performance differently. with some people it helps it, but more often it hinders it.
even though it does give the bronchodilation effect, the hindrance comes from the elevated hr and elevated metabolism. your body is continuously burning more calories while on it, so it's burning more energy at any given level than usual.
personally, i couldn't do as much cardio as usual while on the clen. it just got my hr up too high. however, even though i had to do my cardio at a slower pace while on the clen, i still got much better results than without.
just watch your hr and don't let your heart race too high for too long.