If the study time is tight, don't worry about losing weight. For health, eat three meals a day, regularly and quantitatively, eat more fruits and vegetables, pay attention to the intake of protein, and have a balanced nutrition. If you want to be simple and feasible, you can choose to run, insist on running time and speed every day for 3 months, and there will be obvious changes. If you have the conditions, you can also consult a fitness instructor and make a safe and healthy slimming plan.