Fitness not only requires us to persevere, but also requires us to have a relatively perfect theoretical basis, which can guide us to exercise more scientifically, enhance the fitness effect and avoid sports injuries. In the process of fitness, we often hear all kinds of theories or opinions. Although some theories or opinions are widely circulated, they have no scientific basis. For example, although all kinds of health rumors are proved to be wrong in the end, many people still believe them and publicize them to people around them. Today we will take stock of the common rumors in the fitness circle.

1, the more you sweat during exercise, the better the effect.

Sweating is a scheme of body heat dissipation. Muscle contraction and relaxation will produce a lot of heat. In order to keep a constant body temperature, our bodies will sweat to cool down. In high temperature environment, the amount of sweating will be higher. Some women are superstitious that the more you sweat, the better your weight loss will be, and even wrap your muscles with plastic wrap to cover your sweat. This is groundless. If you can't take away the heat through sweating, it will lead to overheating and even heatstroke.

2, running will increase the calf muscles, resulting in thick legs.

If you are a professional sprinter, because you need to exercise the explosive power of lower limbs, you will strengthen the training of lower limb muscles, which will lead to the increase of lower limb muscle content. But for most runners, the pace of running at ordinary times is very low, mainly long-distance running. As long as you stretch well after running, your legs will not be thick. But long muscles are basically wishful thinking, and muscle training needs to be exercised through certain weight-bearing training. It is difficult to increase muscle content simply by running, especially for women without androgen stimulation, which requires higher conditions for muscle growth.

3. Strengthening abdominal muscle strength training can develop vest line.

Abdominal muscle strength training can really make abdominal muscles more obvious, but whether there is vest line or not, the most important thing is body fat content. If the body fat content is high, even if the abdominal muscles are already strong, there will still be no obvious vest line from the appearance of the abdomen. Therefore, if you really want to have a vest line, losing weight is the key.

4, drinking protein powder hurts the kidney.

In muscle building training, it is necessary to increase the intake of protein to ensure that muscles have enough synthetic raw materials. However, many people will say that drinking too much protein powder is harmful to your health. This statement is only based on the deamination in the kidney, and some patients with nephritis have strict restrictions on the intake of protein. This statement is one-sided and unscientific. Whether deamination is carried out in protein depends on the balance of body heat and amino acids. Proper intake of protein powder is also a means to supplement nutrition, but it still advocates protein in food.