so many people work on cardio they want to strengthen their heart
they do excercises to speed up and slow down the heart rate
how is that good for the heart but drugs are bad?
wouldn't taking some speed be good for the heart?
Now I can understand something like meth.. its too strong and will have your heart going too long
but why not a little coke? caffeine? marijuana drops blood pressure and increases the heart rate.. why isn't that healthy?