You can lose weight, but 30 minutes is a bit long for this sport! If you want to do this kind of exercise, it is best not to take too long, and it is very important to turn in one direction for a certain period of time before changing the direction, because turning in one direction for a long time may lead to intestinal volvulus and eventually lead to the danger of intestinal ischemic necrosis! However, I don't need to say this danger to lose confidence in this sport, because it is also a good exercise way to turn the hula hoop in different directions in a short time.

Finally, I want to remind you that you must stick to it, or your waist will thicken after stopping.