It's actually quite simple. You just need to know how to do it step by step. Do as much as possible for the first time, and don't make your muscles feel pain. Then you can continue to do it the next day. The second day is more than the first day, and I don't want to make my muscles feel pain. Keep adding until you can earn about 100. We can start with 10.

I don't think you can do sit-ups all week.

I suggest you do it at night, and the effect is better.

Come on, I wish you success.