Over three quarters of college students sleep less than seven hours a day, according to a survey. The survey was based on 144 questionnaires filled by undergraduate students at Wuhan University of Science and Technology (WUST).

It showed that over 65 percent of the students played computer games or used their smart phones every night before sleep, with 51 percent reporting they suffered from poor quality of sleep, Wuhan Evening News reported.

A male student surnamed Huang at WUST's college of science said he regularly played games until after midnight. "In the daytime, I nap in class and at night, I cannot fall asleep." He mentioned this vicious circle is not unique.

Having failed to secure a job yet, a senior surnamed Zhang was suffering from insomnia. Stress about upcoming job interviews regularly kept him up until 3 or 4 am. 

Luckily, some students seem to drift off to the land of nod without a hitch. 

Chen Guoquan, a student who graduated last year from the South China Institute of Software Engineering of Guangzhou University said neither he nor his classmates suffer from sleeping problems. He told the Global Times Tuesday that "I went to bed around 1 am and woke up around time at 10 am. It was the perfect length for a solid snooze."

Ding Yuan, a psychological consultant with WUST said the ideal time for sleeping should be around seven or eight hours. If a person sleeps less than eight hours regularly, it can cause dizziness, memory loss and a deficiency in the body's immune system.

Ding added enough sleeping time is key to quality of life, suggesting that college students keep a regular schedule and exert better self-control.

Hu Zehong, a counselor at Xiamen University, told the Global Times that normally freshmen suffer from fewer sleeping problems. "We guide freshmen more as they just left their families and lack self-discipline."

According to Hu, the dorms for freshmen and sophomore students have curfews. They also cut off the electricity and Internet after 11:30 pm. But for juniors and seniors, the rules are more flexible.