Advantages: weight changes quickly.
Disadvantages: Because the weight changes too fast, it may lead to endocrine abnormalities, skin relaxation and other factors. If you have cardiovascular and cerebrovascular diseases, you may die suddenly.
Gym is a place where fitness enthusiasts gather. The fixed equipment is designed according to human mechanics, and there are various exercise methods.
Advantages: you can choose strength and aerobic equipment, and you can take free group classes (yoga, dance, fat-reducing exercise, etc. )
Disadvantages: self-discipline, no supervision and no personal education.
Please adopt it if it helps.