Described by Wikipedia thus: Melatonin, also known as N-acetyl-5-methoxy tryptamine, is a hormone that is produced by the pineal gland in animals and regulates sleep and wakefulness. Melatonin is also produced in plants where it functions as a first line of defense against oxidative stress. It is essential we produce it constantly for it quickly disappears from our bodies. We only produce melatonin when we sleep. It has to be concluded that it is likely, given that the pineal gland performs this function, that the magnetite is the ‘clock element’ that instructs the pineal gland when ‘night’ is because we do not produce melatonin in daylight. If you were to fall asleep in the…