students will work harder.
students need enough sports and activities to do physical exercises and relax， but in some schools they are not given enough time to do outside activities. its harmful for students growth. teachers ask students to spend most of their time on studies. but when they feel tired and bored， students cant concentrate on studies. they are in bad health.
its necessary to give students enough time to do outside activities. after good relaxation and rest， students will work harder.
pay attention to students health and growth.
