India, Nov. 21 -- How can one measure the quality of sleep, whether it is good or bad?

A good quality of sleep is very important. However, people often mistake quantity for quality. Many complain that even after getting a sleep for eight to 10 hours a day, they don't feel fresh and energetic enough. Well, the actual way to track your sleep - the gold standard - is by doing a 'polysomnography' or in layman's terms, a sleep study where you attach a few wires onto the head. It actually tracks your brain activity and also monitors your eye movements, etc. We can actually see what stage of sleep you're at and whether you're getting deep or REM (rapid eye movement) sleep again, which is very important.

Usually, the first question I ask my pat...