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.
Overview. Melatonin is a hormone secreted by the pineal gland in the brain. It helps regulate other hormones and maintains the body's circadian rhythm. The circadian rhythm is an internal 24-hour clock that plays a critical role in when we fall asleep and when we wake up.When it is dark, your body produces more melatonin.When it is light, the production of melatonin drops.t helps regulate other hormones and maintains the body's circadian rhythm. The circadian rhythm is an internal 24-hour clock that plays a critical role in when we fall asleep and when we wake up. When it is dark, your body produces more melatonin. When it is light, the production of melatonin drops.