Waist and abdomen fat is not built in a day, and there is no local slimming. In other words, this part of fat needs to become thinner all over the body, and then it will become thinner accordingly. Simply put, this part of fat is actually stubborn. At this stage, belly rolling has little effect on you. It takes a long time to run 5 kilometers and ride 15 kilometers, so you can do it alone. If you can, do high-intensity exercise such as hiit for 20 to 30 minutes.