The main reason is that college students' time is too loose and unrestrained, and no one cares or asks. I have had this bad habit since college. I can't lie in bed every morning. Our school has rules for morning exercises. Running twice a week is good for me. I always greet my classmates in advance and help me answer in class. Every day in the dormitory, I always ask my roommate to bring me meals. No one restrained me, so I formed this habit. The key is that other students are like this, so I will go with the flow.