Chronobiology. The study of how time effects you body. The time of day, the time of the month, the time of the year. It is interesting to note how at certain times of day one is more alert, certain times of the month one can be more bloated, and at certain times of the year one is more likely to be depressed. Hum. It is pretty obvious that our bodies are effected by time.
Here's a little guide of some "normal" times for a person who sleeps at night and gets up about 7am.
7am: blood pressure and pulse surge
testosterone highest in men
melatonin secretion turns off
8am: bowel movement most common
9am: bowel movement most common
body weight lowest (step on the scale NOW!)
10am: mental alertness and arousal high
Noon: mood high
2pm: eye-hand coordination best
3pm: best time for power nap
4pm: reaction time best
5pm: best training time for most sports
lung and heart efficiency maximum
muscle strength and flexibility peak
breathing easiest in lung diseases
6pm: taste most acute
7pm: body temperature peaks
8pm: track and swimming performance best
alcohol best tolerated
9pm: melatonin secretion starts
11pm: sexual intercourse most frequent
1am: spontaneous labor most often starts
2am: sleep deepest
3am: skin repair peaks
4am: natural childbirth most common
5am: body temperature lowest
6am: dreaming most intense
cortisol secretion greatest
insulin secretion highest
height greatest
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