Which of the following promotes the release of melatonin at bedtime?i.  Lights outii.  Lying downiii.  Closing eyesiv.  Winding down

The release of melatonin, a hormone that regulates sleep-wake cycles, is influenced by light. Therefore:

i. Lights out: Yes, turning off the lights promotes the release of melatonin. This is because melatonin is produced in response to darkness. When the lights are out, your body recognizes it as a signal that it's time to sleep and begins producing more melatonin.

ii. Lying down: Not necessarily. While lying down can be part of the process of getting ready for sleep, it doesn't directly stimulate the release of melatonin.

iii. Closing eyes: Not necessarily. Similar to lying down, closing your eyes can help you relax and prepare for sleep, but it doesn't directly cause your body to produce more melatonin.

iv. Winding down: Yes, winding down before bed can promote the release of melatonin. This can include activities like reading, meditating, or any other relaxing routine that signals to your body that it's time to sleep.

So, the activities that promote the release of melatonin at bedtime are turning the lights out and winding down.