Sweating during exercise is normal, as long as it is not too serious, add more water and minerals to maintain electrolyte balance. Pay attention to moderate fitness, not excessive consumption, but the muscle gain is not obvious.

You should eat more and sleep more, and have a look at the online muscle building experience when you are free. A blogger in Zhihu shared a lot of his experience in building muscles. Uncle Zhuo is getting fat, so fitness should strengthen his brain first.