Muscle can be damaged and recovered at the same time, but it cannot be recovered to the extent of injury. I estimated the principle. I read the post, and it is obvious that those who have obvious muscles after 30 days actually have a certain muscle outline 30 days ago, and have a certain foundation. Doing only 300 push-ups every day is basically not ideal for muscle gain. I think they are combined with fat-reducing measures to make muscle gain more effective. In terms of training, they only said that they do 300 push-ups every day, but they didn't say whether there were other fat-reducing trainings. Even without other training, they can reduce fat through diet. When body fat and weight decrease, muscle mass increases. There is a man in the middle, very, very thin. After 30 days, his muscle mass will not increase much, and it is estimated that there is no way to lose fat.

The cause of soreness is the tearing of muscle fibers, not the result of lactic acid accumulation. The lactic acid produced by strength training will be metabolized within 1-2 hours, but the pain can last for several days, which is completely different.

It depends on the individual. If you can do 300 in a row on the first day and 300 every day for 30 days, the effect will definitely be bad. If you can only do 30 at a time on the first day, do 10 times a day separately, and then do 300 again a day later, the effect is still good.