Business Don't lose sleep over it: Even if you don't get enough shut-eye, most fixes are easy Updated : August 13, 2019 10:42 AM IST From a clinical perspective, sleep is defined as a reversible behavioral state of unresponsiveness and perceptual disengagement from the environment. Adequate sleep is and always has been restorative to the body. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.