First, do three and a half squats every other day (that is, squat until the knees bend 90 degrees), and each group will 10~20 times. 1 month later, the old injury will be relieved. You can also use hot compress, acupuncture and other methods to speed up blood circulation, so as to accelerate tissue recovery. During the recovery of foot injury, you can lose weight through push-ups, sit-ups, pull-ups and other fitness programs that hardly use your feet. Use swimming instead of running as aerobic exercise. Aerobic+strength is the most efficient way to lose weight.