Why does sunlight make me tired?

I have the same problem as everyone in here!

I'm a high schooler so I constantly find myself awake at night doing homework projects and stuff, so I KNOW my sleep schedule is off. But even before high school, going out in sunlight just took it right outta me. Like today, for example, I stepped out into the sun (I live in Florida) and I just got soo tired. It was 85 and humid. I even had trouble breathing more than everyone else. Then I got home and slept for 5 hours straight. I am in really good shape too, so it has nothing to do with being overweight. I moved from Oregon to Florida a few months ago and I even had this problem in Oregon on rare super sunny/kinda humid day. I know my dad was anemic at one point so I'm starting to worry. My parents also never take me seriously when I say something is wrong. I also just feel so much better at night. I stay up till 5 in the morning on weekends, so is this just how I am or is there something wrong?

I also get tired on sun and my reasoning is that blood presure drops down because heat expands those things that carry blood , brain gets less oxegen and goes into stand by mode triggering emotion "of being tired" in order to motivate you to reduce your brain activity by laying down.
For instance I play tennis and if it is Sunny I can bearly move but if I play at the evening I am unstopable, I can play for hours.

It's evolution. We are not evolved to live in these latitudes. That's why they have siestas in hot countries and only mad dogs and Englishmen go out in the mid-day sun. Exposure to the sun is also known to cause a marked degeneration in moral rectitude.

One only need compare Italian operas to those written in the cold north to see that.

i have the same problem.
the sun drains me, the moon gives me energy.
i figure it's just because i'm a cancer.

If anyone finds personally makes progress on the subject, please do post!

I'm 53, male, live in New Mexico, and just want to sleep all day in this summer sun. Very odd, since when clouds come in late afternoon this time of year (mid- June through August) I get my energy back. Still hot, just no direct sunlight. Been like this since I moved here 19 years ago.

I also get infused with energy after the sun goes down, I can walk for miles or do lawn work for hours, all the while getting hot and sweaty, no worries.

If I'm inside working, it's not too noticeable. I do a lot of wiring in my job behind computer servers and sunlight is not present, I have tons of energy. Also, it is quite cool in there.

When I go back to PA for vacation, the sun does not bother me near as much as here. There is much higher UV here, but even so, it's not near as bad there as it is here.

Even working in my home office, with the shades drawn and a desklight on, I get far more done than looking out my kitchen window with the curtains open and working on a laptop.

Reading previous suggestions, I find the vampire thing quite funny- I never seen vamp's working outside under cloud cover!

I stay well hydrated but that alone is not the answer.

I lived in Germany for many years and never got this tired but there are more cloud covered days there then here, also generally, much cooler summers.

I don't have the luxury of sleeping all day and night just cause I have no energy.

Any and all answers & guesses would be greatly appreciated!

Such a thing as "Depression from Sunlight"??

Tiredness is found to be caused due to sun only..

1. If you have slept for very long (more than 12 hours) or very short (less than 2-3 hours)
2. If you drink less water and sweat under sun.
3. If your eyes suffer through a condition wherein the pupil cant be adjusted in sync with the intensity of light. Causing headaches and eye strain and thus leading to mental tiredness.
4. When its tropically humid

Hi my name is cathy, hope you get this. Just wanted to let you know that everyone in arizona has this problem, i have met countless people of all ages having this same problem. Its the UV rays, they are making you feel like a magnifing glass is burning your skin here in arizona and the higher the altitude and the closer to the equator the worse it is. Our ozone layer is getter thinner and making us sick because the rays are more potent making everything more active like pollution, ozone, smoke which by the way has gotten out of controll especially out west where all the fires are buring and so called control burns,they are even doing this burning thing in the ozarks , the govt. gave the forest people a big stimulous and now its all about money and they are burning like mad men and people are really getting sick from it, mixing smoke humidity and pollution and high UV rays then it settles at night choking you. search it out on google and you will find alot of stuff about all of this. The stronger the sun the more active the what ever is out there is going to be. I cant even drive in my car anymore when the sun is out and that makes me sick and this year has been far worse than last year. living where there is less burning and less sun is the best option if you have this problem, stay out of the sun in the summer until it goes down, that is what i do. dont feel alone there are alot of us out there, sorry you have to go through this at such a young age and i know parents can be non attentive to there children.

By the way, i cannot breathe good either in the sun, and humidtiy like that is a killer on me to, with that kind of a mix, that goes with it as well, oregon was probably a better place for you than florida.

God Bless you

Cathy

Cathy

I presume people live there because property prices are low and you can get 50 acres and a swimming pool for the price of a broom cupboard in Manchester.

Fluorescents are NOT the same as the sun! Fluorescents make one tired because they suck the life out of you! They flicker constantly, even when you can't tell-your eyes can. I have removed every fluorescent in my house and can't stand to be in them for very long when I'm out. I too almost always wanted to fall asleep in school-now I know why.