If you can, go to the gym. If you don't go to the gym and exercise by yourself, just do as I say: do push-ups no matter how many times until you are exhausted, and then shout out two or three. This is to exercise the upper back muscles. Exercise your abdominal muscles. I suggest you really lie flat and lift your legs. Fatigue is limited. The best way to exercise lower limbs is leapfrog! The key step: diet, eat less greasy sweets, eat more lean meat and eat more garlic.