There is no formal definition of liberal arts college, but one American authority defines them as schools that emphasize undergraduate education and award at least half of their degrees in the liberal arts fields of study.. Other researchers have adopted similar definitions.
âMelatonin is an important regulator of brown adipose tissue in mammals, which burns calories by ramping up the bodyâs metabolism,â Fridlund said. In addition, human bodies naturally adjust melatonin production levels in response to changes in light.
A: Melatonin is a hormone that helps to regulate the sleep-wake cycle. Levels of the hormone drop during the day and rise at night. Studies suggest that melatonin helps restore sleep when the body's internal clock is disrupted like when people work at night and sleep during the day or as a result of jet lag.