A US-based expert suggests regular wake-up time and lifestyle changes to handle insomnia, Liu Zhihua reports.

Sleep problems are common, especially in a fast-paced society where people are stressed about work.

Almost everyone has trouble falling asleep from time to time. But if someone has difficulty with it at least three times a week for more than three months - and if that interferes with the person's daily routine - then he should take the matter seriously, says Nalaka Gooneratne, associate professor of medicine at the University of Pennsylvania.