Found this on google from BIG CAT
Clenbuterol should not be taken too close to a workout. It can interfere with
your breathing and complete ruin your workout. When doing cardio, it's
advisable to stay at a consistent pace and avoid HIIT style routines.
No offense, but alot of people don't agree with BIG CAT, and I am one of them. I've had differences of opinion on other things he's said in the past as well.
Since when are you going to base your opinion on the thoughts of one individual?
Keep reading.....
Provided your sodium and potassium are being replenished, you shouldn't have any problem doing cardio on Clenbuterol....
DIV