I am confident of my cardio-pulmonary ability and endurance. I can have two rotation classes at four o'clock in the afternoon and six o'clock in the evening (action standard damping standard). I can jog continuously at a pace of 10km/h 1h+ and run for 30 minutes at a speed of 9 to 12. In this way, every time I jump Sparta 500 (black vision+hypoxia), I almost reach the limit. .
Fitness is unprofessional. Both fat loss and muscle gain can be achieved quickly, but the persistence of quick success and instant benefit is poor. It is still necessary to proceed step by step, and persistence is the most important thing. You don't have to do too much training at a time, but you'd better set aside some time for exercise every day.