Increase the range of motion in your joints :D
Tolerance can in fact cause an overdose, because the greater tolerance you can get the more of a certain substance your body will need eventually leading your body to take more than it can handle leading to overdose and death.
The answer is "A"
Chlamidya is a STD and bacterial infection that will usually be involved with all the symptoms that you have listed.
The heart itself needs blood and nutrients to work properly and gets its share of blood supply from coronary arteries. Coronary heart diseases are linked to coronary arteries. The diseases of coronary arteries are very dangerous; coronary artery diseases like atherosclerosis may cause heart attack.
