You can do push-ups and sit-ups in the morning and evening, but if the purpose is to exercise muscles, you should do it at once. Besides, it is not advisable to exercise on an empty stomach in the morning. If you want to exercise in the morning, you should exercise for more than an hour after meals.

For adults aged 65,438+08-64, at least 65,438+050 minutes of moderate-intensity aerobic physical activity (such as brisk walking, doing housework, and carrying goods under 20 kg) or at least 75 minutes of high-intensity aerobic physical activity (such as fast cycling, aerobic exercise, and carrying goods over 20 kg) or a combination of moderate and high-intensity activities every week.

For children and adolescents aged 5- 17, at least 60 minutes of moderate and high-intensity physical activity should be accumulated every day; For adults aged 65 and above, physical activities include daily life, family and community, transportation (such as walking or cycling), professional activities (if they are still engaged in work), housework, play, games, sports or leisure time activities in planned exercise.