Okay, this is an interesting one but mainly no, most activity's will so you don't push yourself but if you really wanted to you could go for however long you want as long as you are not doing harm to your body, depending if you are on a fitness program there will be limits.
You may miss the symptoms but there are symptoms and they can be detected and life threatening. Especially if we consider AIDS as an STD. I believe the answer to be B. False
