Jog for a few kilometers, then do three sets of sit-ups, 40 in each group, and then do three sets of push-ups with 30 in each group. Push-ups in each group should be completed within 4 minutes. In these four minutes, you have to hold on and don't collapse. I suggest you hold down the ground with your fist, so that your fist will become hard. If you can't do it, stick to it for 4 minutes. I suggest that you finish these exercises in two hours. Practice this for 3 months to ensure that the whole body is thin, especially the face. Whether you can persist or not depends on yourself.