It's best to go to bed. You can add it slowly, for example, make 30 on the first day and add 3-5 every day. Don't do it all at once. If you eat it in one bite, you won't get fat, and you may even stretch your muscles. If you want to lose weight, you can also cooperate with other sports, such as aerobic exercise and yoga. As for the problem of stomachache ... to be honest, if you keep doing it every day, nothing will happen after a week. ...