Sit-ups are useful, but only if they are done often. You can do 65,438+05 or 20 exercises less every day, but you must stick to it for a long time at a fixed time. Otherwise, they will not be effective or even rebound. Don't go on a diet, eat whatever you want, but try not to eat fried food and sweets. Most men like to exercise. Exercise is the best way to lose weight. Let's go