So two of the main beneficial things that cardio exercise can do for you is to increase your lung capacity and it makes your heart strong so it doesn't have to work as hard to pump blood throughout your body. So while I already do some cardio, I was wondering if there were any supplements/nootropics (not prescriptions though) that mimic those two effects. I know for example there was some kind of drug that increase lung capacity that is commonly viewed as a steroid that athletes have used which is against most rules, so that is an example of what I am not looking for. And for example, lets say there isn't a supplement/nootropic that makes the heart stronger the same way that cardio exercise does but lets say some how makes the blood flow more easily for whatever reason, within the parameters i mentioned (not prescription), that would be something that interests me too. Looking forward to what you guys might know.
Thank You