lybrate-user its a good thing that you have to take asthma
meds only when you get the attacks, that itself indicates, that if you want, you can go for cardio exercises, start simply
by going for walks, start initially with just may be 15-20 min of brisk walk, increase the duration of walk by 5-10 min evey 15 days till you can do brisk walking for almost 45 min to 1 hr once you r comfortable with brisk walking you gradually star adding a 30 sec to a min of sprinting to your walk. This will increase your endurance I feel the major hindrance to your cardio is not your asthma but your weight, your BMI is almost 31, if you can reduce your weight and get down your BMI to 25 (that is weight of around 72) you will feel much better. This is going to be difficult but if you want you csn easily do it at your age of 21 Remember persistence is the key to weight loss
, it will be a long and tedious journey, but where there is a will there is a way All the best to you.