Do 100 sit-ups at a certain speed for more than 30 minutes.
At the same time, we need to pay attention to a reasonable diet. Drink water often. Water is the cheapest, healthy and clear in taste, which helps my body to maintain good function and work normally. Never let our bodies lack water. Avoid all kinds of soft drinks, fruit juices and even those refreshing drinks. Eat more fresh fruits and vegetables, moderate lean meat and other high-quality protein, and eat less fast food and foods containing unhealthy fat (commonly used in traditional candy, biscuits and cakes).
I hope I can help you and be healthy and happy.
o(∩_∩)o!