Keep software has many free courses, some courses need to be watched by members, some courses need to be purchased for a specific month to lose weight, but some stretching exercises are still very good, and the pain will recover faster after each stretching exercise. There are also sports equipment in it, which can be sold, but it feels ordinary, and shopping in other places on the Internet has the same effect. I practiced intermittently for half a year, and the effect was average, but I didn't buy a member, which may be related to my lack of persistence. If we can persist and act in place, it should have a good effect.