Answer:
Lipolysis. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl CoA, which is used by the Krebs cycle ...
Health includes body functioning and overall well-being because it helps you lifetime
Your heart rate might be higher on a regular basis, and your fitness levels may go up because you are training your body and it is adapting to what you are doing. you can monitor it by measuring how far you run, doing blood pressure, checking your pulse etc
It depends on the person but a few weeks to about a month.