D) It weighs the same as fat. The myth that muscle weighs more than fat is just that a myth
It really depends on you and your preferences. If you're okay with getting fit in a longer time frame and if by get fit you mean lose weight, then I would suggest do some cardio exercises each day, ideally for an hour or so (running, walking, exercise machines like elliptical or treadmill). Also, make sure to have a balanced diet. Try to limit bad carbs (bread, pasta, etc. ) when possible and eat lots of protein and vegetables. But it is okay to not follow your diet all the time; you can have some cheat days.
Hope this helps
Answer: It happens when the autonomic nervous system (ANS) doesn't work as it should. The autonomic nervous system is the body's "autopilot" system, controlling things like heart rate, blood pressure, and breathing. (I'm not sure tho)
Explanation: