India, March 31 -- Sleep is probably the most important function in our lives because it restores and repairs our body organs, calms our mind, helps conserve and store energy, and relaxes our muscles. Many feel sleeping is the easiest part of their lives; however, it is one of the most complex body processes. Most importantly, our capacity to learn, memorise things, and maintain sound mental balance requires good-quality sleep. Recent studies have shown that good sleep confers an efficient and strong immune system, which is vital to combating infections. A good quality sleep should be of an adequate duration (6-8 hours), uninterrupted and with normal stages of sleep....