When you do sit-ups, it is what we usually call peak contraction, which can make the target muscle reach the state of mercury, but don't stay too long and feel the burning sensation of the muscle. However, peak contraction is more effective when the shape of muscle has been set, so it is more suitable to use it when carving muscle lines. Push-ups are not as good as tensioners Push-ups exercise the triceps brachii, but in this process, the pectoral muscles are also involved, mainly on the outside of the pectoral muscles, so it is best to buy a stretcher. If you want to exercise every day, the goal is to grow muscles and increase strength, you need to add a lot of protein. It is not enough to eat only two eggs a day. It is better to eat some chicken, fish and beef. Everyone needs to be fully supplemented. In addition, if you exercise at home, it is not recommended that you eat protein powder and creatine, because you are not a professional and don't need to eat them, and some of these products are not cheap.