In moderation, not at all. If you're doing long endurance runs, be sure to consume enough carbohydrates and protein to prevent your body from breaking down muscle for energy.
Run many miles.
Of course build more muscle , because when you have more muscle in the body , help burn about 50% more body fat , that you are burn. :-) .
Doing this you will still lose muscle. The only reliable way to lose fat and keep muscle is exercising.
You cannot "lose" muscle unless you have muscle wasting, such as when very ill and bedridden. You can lose fat and shape / sculpt muscles.
Sure. Muscles that aren't used will shrink. An athlete that stops exercising will lose muscle
Yes, exercise is the key to keeping muscle tone. If you lose weight and don't exercise you will also lose your muscle in the process.
Muscle loss. Have you not been eating?
by not eating
yes but slowly. you lose tone first.
stop eating
u cannot lose your muscle in gta sa because that are not a good idea.
Stop exercising them. The muscle will atrophy. (Also, you'll probably lose weight rather than gain it; muscle is more dense than fat.)