Why does sunlight make me tired?

Isn't it Vitamin D?

Is that why hot milk is recommended for helping one sleep?

My guess is that sunlight makes you tired because you're short on sleep.

Manufacturing Vitamin D is a fairly automatic process, requiring little extra effort.

Noddy, what is the connection between sunlight there?

I know that in VT it is not usually that sunny and I never had problems. Even if I don't get much sleep, the tiredness wears off after the morning and I am good to stay up late.

But every time I go somewhere its hot and sunny I find myself getting extremely tired, having trouble staying awake for even a normal amount of time and wanting to get 10-12 hours of sleep sometimes...when I am usually fine on 6.

I believe it's the calcium in warm milk (any milk) that is supposed to help you sleep.

Stuh, if you spend a lot of time in the warm/hot sun, doing labor, you can get heat sickness.

That's from dehydration though. I don't work outside, but today I just warked around for a few hours outside...and drank a lot, I think.

drank a lot of what?

Red wine. Why? :wink:

edit - in all seriousness, it was water and root beer

I really think it's the sunlight though!

Why? Because some liquids dehydrate you more than they hydrate you. Red wine, for example would dehydrate you more than hydrate you. Water is all hydrating and root beer is sort of in between.

Anything with alcohol in it dehydrates you more than it hydrates you.
Alcohol not only causes you to excrete the water you're taking in with the drink plus extra it also blocks the takeup of water so it's a double-whammy.
Obviously the concentration of alcohol is a factor.

I reckon you're getting tired in the sun for the same reason I do.
You need more sleep.
The light is telling you that your body clock and circadian rhythms are all screwed up and your body wants to go to sleep.
Let it sleep.
It'll be fine in a couple of days.

That's what I would do.

Trust the body. If the "mind" fights the body too much the body eventually gives the "mind" the old heave-ho.

hot and sunny....as in hot, sunny and HUMID?

The humidity will knock you out.

I know that here, it can be in the upper 90's, but if it's dry, just being outside doesn't tire you.

However, if it's humid on top of that, it'll really wear you out.

I just did some hasty research and learned that Vitamin D is misnamed--it is one of a number of steroid hormones (like adrenaline) manufactured in the body.

While its manufacture is triggered by sunlight, this manufacture is no more tiring that manufacture of the other steroid hormones.

Much more here:

http://vitamind.ucr.edu/biochem.html

I think it is tryptophan that is the amino acid in milk that affects sleep..

The sun makes me tired...
Wow... I can't say that I agree with the other posts to your problem, but I think that it's good that people are trying to help with possible solutions. I know what you're going through because I happened upon this post when I was looking an answer to this problem for myself.

I get plenty of good sleep and I know when I'm tired from over-exertion.
I'm in excellent physical shape and I have a strict PT regiment thanks to Uncle Sam.
As soon as I get out in the sun (moonlight doesn't affect me) it absolutely drains me of everything I have. I just want to go take a nap. As soon as the sun goes down a bit I'm fine or if I'm in it for a prolonged period of time I can fight through it, but it's like taking a Tylenol PM or something.
I don't think that it's a biorythym thing because I'm on as near a perfect sleep cycle for my body as anyone could ask for. It's just the sun.

BTW, I currently live in Hawai'i so there is plenty of it...
I guess my search continues...

Re: The sun makes me tired...


Yup!

Maybe you're becoming a Vampire? Have you checked your neck?

No.

Should I?