# body clock

The timekeeper in your brain that runs on a cycle of about a day, setting when you feel sleepy and when you feel alert. Daylight, especially in the morning, keeps it in step with the clock on the wall.

## Where it comes up

- [How do I get through the day after a bad night?](https://nitez.com/after-a-bad-night)
- [Are naps good for you?](https://nitez.com/are-naps-good-for-you)
- [What is the body clock, and how does it decide when I'm sleepy?](https://nitez.com/body-clock)
- [How much sleep do I really need?](https://nitez.com/how-much-sleep)
- [Why do I keep waking up at 3am?](https://nitez.com/waking-at-3am)
- [Is it okay to take melatonin every night?](https://nitez.com/melatonin)
- [Why am I still tired after a full night’s sleep?](https://nitez.com/tired-after-sleeping)
- [Why am I wide awake at bedtime?](https://nitez.com/awake-at-bedtime)
- [How do I sleep well on night shifts?](https://nitez.com/night-shifts)
- [What happens while we sleep?](https://nitez.com/stages-of-sleep)
- [What can I do when worry keeps me awake?](https://nitez.com/worry-at-night)
- [How do I wind down when I’m tired but wired?](https://nitez.com/winding-down)
- [Why can’t my teenager fall asleep before midnight?](https://nitez.com/teenagers-and-sleep)
- [Why does my sleep change as I get older?](https://nitez.com/sleep-in-later-life)
- [What is REM sleep?](https://nitez.com/rem-sleep)
- [What makes us feel sleepy?](https://nitez.com/sleep-pressure)
- [How do I get over jet lag faster?](https://nitez.com/jet-lag)
- [Why do I wake up too early and can't get back to sleep?](https://nitez.com/waking-too-early)
- [Why do my legs feel restless at night?](https://nitez.com/restless-legs)
- [What makes a bedroom good for sleep?](https://nitez.com/the-bedroom)
- [Why are some nights better than others?](https://nitez.com/good-nights)

https://nitez.com/words/body-clock