Generally speaking, the higher the aerobic intensity, the longer the time and the higher the protein energy supply ratio, the easier it is to lose muscle. When the calories consumed during fat reduction are greater than the calories consumed, the muscles will lose some in the long run. Muscle decomposition needs protein's cooperation, otherwise it is more difficult to decompose. If you consume fat, as long as the amount of exercise reaches, it can be effectively decomposed. There is no once-and-for-all fitness method. Only persistence can have an effect.

If a person needs fitness, but always "drying the net for three days and fishing for two days", do you think this person's fitness goal can be achieved? Only perseverance can achieve the purpose of fitness, so it is very important to keep fit.

Because I was too fat before, I had to take two steps to breathe. Because I heard from my friend that running can lose weight and keep fit, I tried it. But after less than two days, I couldn't hold on. Running can really make people energetic. You won't be so breathless when you walk, but you can't stand running around, let alone insisting all the time. However, my friend persisted and was in good health. Whenever I walk breathlessly, I really admire her relaxed appearance. But I can't hold on, I can only envy.

So people can't be lucky, especially in fitness, and don't think about it once and for all. With the increase of age, people's resistance will also weaken and their muscles will slowly shrink. Only exercise can keep you healthy, and your heart will feel much better without disease, especially when you are old. Physical health is really crucial. Many old people have a bad temper in their later years. It is precisely because they are tortured by diseases that they have a bad temper again and again.