Let's talk about aerobic exercise first, which doesn't need much space (but if you are a particularly obese group, reducing running will cause irreversible damage to your knees. You can start with swimming, even if you can't swim, walking in the water is also a good exercise), and it is faster and can boost your confidence. Get into the habit of exercising first.
The second step is to control the diet, not to eat less, but to control the calorie intake of each meal, because the biggest part of people's daily consumption is basal metabolism (a person will consume about 1500-2500 calories according to different parameters such as height and weight, which is basal metabolism), and the calorie consumption of one hour of exercise is only 200-600 calories. However, once people are hungry (for example, three to two meals will inevitably make them feel hungry), in order to protect themselves, people will instinctively and automatically lower their basal metabolism to protect themselves. However, the wrong method of hunger and weight loss will one day make them hungry and eat a lot of food, and at this time, their basal metabolism will not recover quickly, which is also the reason why many people have lost a few pounds and rebounded a lot. Therefore, controlling diet is definitely not starvation, but controlling the total calorie intake of each meal. Therefore, it should be noted that you must not eat high-calorie foods (such as fried foods and puffed foods) during fat reduction, and you can eat more crude fiber foods during fat reduction. Crude fiber food is easy to produce satiety and won't make you feel hungry, so the basal metabolism will not decrease.
The third step is to increase equipment exercise, because aerobic exercise is effective in the short term. After a long time, the body will reduce consumption when it adapts to sports, and its weight may rebound. Therefore, at this stage, you should start to practice muscles, with the aim of improving the level of basal metabolism, so that even if you don't exercise, basal metabolism can help you consume calories. This is a once and for all method.