A client experienced an MI 10 years ago. He is a 48-year-old man who has frequent episodes of angina. He is tachycardic. What is the first drug of choice for treatment of his condition?

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)