Thin people have low body fat and don't need to do fat-reducing exercise, but they should pay attention to their diet. Although thin, if you start to exercise, you should stay away from high-sugar and high-fat foods (drinks such as Coke Sprite should not touch the pork belly, so eat as little as possible). Mainly pay attention to protein and carbohydrate absorption. Eat as little as possible chicken and duck meat (skinless chicken breast is best) or beef and mutton (beef is best) (you don't have to eat too much every meal, you can eat more a day). Broccoli and spinach are especially recommended.
Exercise begins with jogging. Although you are not fat, proper aerobic exercise can promote your cardiopulmonary circulation and enhance your endurance. It doesn't matter if you run for about 20 minutes every day. The main thing is that you can't stop running for 20 minutes (of course, you can't walk like that), and then you can start basic dumbbell training (push-ups are not recommended for beginners). This is more complicated, it's hard to say. There are special tutorials to watch in keep. It's a fitness software. I also use it. Then I input my height and weight, make an exercise plan, choose T2 difficulty at the beginning of the difficulty, and then rest every three days to relax my muscles. If you feel sore after exercise, you can do a set of stretching (there is also a tutorial in keep). Now that you have decided to exercise, you must stick to it.
You can ask again if you don't understand anything. If not, adopt it (? )?