system
Given the following post, respond as if you're commenting on Reddit:
human
If cardiovascular exercise is healthy for you because it gets your heart pumping, why wouldn't it be considered a "healthy" side affect of certain legal/illegal drugs the fact that they get your heart pumping (ie. cocaine, coffee, etc.)?

I know drugs legal/illegal, although sometimes fun, are not "good" for you. But an important part of cardiovascular activity is raising the heart rate and making that muscle work more actively then when it as rest. So why wouldn't whatever drug that might make your heart pump faster have some kind of "good" side effect in that it makes the muscle work harder than when it is at normal rest rate.

I'm not wondering this to at all make a justification of drugs being good for you in some way. Just a small thought I had earlier today.
gpt
Increased heart rate due to exercise is caused by muscle tissue needing more oxygen. The heart pumps harder to
send more oxygenated blood to the muscles. This increased pumping strengthens the heart muscle, which is good for heart health. Increased heart rate from chemicals like caffeine, nicotene, amphetamine, etc. is caused by vasoconstriction--the constriction of blood vessels. This causes the heart to have to pump faster in order to pump the same amount of blood, and in the long-term can cause hypertension.