If you are an office worker. Usually get off work at 5-6. It is recommended to go to the gym 1 hour after meals (not too full). 7-9 o'clock is the best time to exercise in the evening (don't go after 9 o'clock around 8-9). If you are a student, it is recommended to go after 3 pm during the formal summer vacation or during weekend exercise. People are often in good shape at 3-6 o'clock. Pay attention. If you are tired (whether for work or exercise), don't go. Finally, pay attention to replenish water and protein after fitness, and warm up before fitness. I twisted my ankle several times without warm-up.