If you are too fat, you need to lose weight. Generally, you can start fitness if you are fat or thin. Protein should be supplemented during fitness.

Yes, you can. Pay attention to protein's supplement in the process of fitness.

Protein demand: non-sports days: 0.9 g x self-weight kg; Aerobic days: 1.3g x body weight kg; Strength training day: 1.8-2.0g x body weight kg. For example, if a person weighs 70kg, the protein in these three cases should be about 65g, 9 1g and 140g respectively. A person eats 50-60 grams of protein in a normal diet. Therefore, protein can be supplemented additionally, such as taking protein powder. Protein powder can be found in physical stores such as pqfitness.

Drinking methods: soak cereal, mix with milk, mix with sports drinks, etc. (Can't exchange hot water, it will destroy protein)

Take vitamin B every day. Because the ingested protein will be decomposed into amino acids, amino acids need some trace elements in the process of synthesizing muscle protein. At this time, vitamin B should be supplemented, otherwise it will cause oral ulcer to get angry. Composite size b is recommended.