It was summer, so when I went into the ocean I was surprised to find that the water was colder than I had imagined.
It was so cold that my body was shivering, just like in winter.
Ah, at times like this I think I need a belly warmer, or I get sweaty and then suddenly get cold on the train, and I feel like my ankles are going to freeze...
However, the outside temperature continues to approach 40 degrees, and although summer is fun, your eyes can be surprisingly tired just from being exposed to the sun, and if you don't give your body proper rest, you'll probably find yourself quite tired by September .
This is similar to what I wrote in my blog yesterday, but it may be that the cold is making my body tired.
Humans are warm-blooded animals, so their body temperature remains constant even when the outside air temperature changes. If I recall correctly, I remember learning in science class that mammals are warm-blooded animals.
After all, your body temperature doesn't reach 15 degrees in winter...!
(By the way, the body temperature of chickens is 42 degrees, while that of dogs and cats is 39 degrees! I don't think I'd sleep in the same futon as chickens, but dogs and cats are welcome in the winter. Lol)
Therefore, when placed in an environment where the temperature changes drastically, they either retain heat in their body to keep their body temperature up, or release heat to prevent their body temperature from rising too much.
The autonomic nervous system works a lot to maintain body temperature, so drastic changes in temperature put a lot of strain on the body, making you more prone to fatigue.
Apparently, a disturbance in the autonomic nervous system can cause you to feel cold and fatigued, so it's said that warming your neck is effective in improving the functioning of your autonomic nervous system. It's important to improve blood flow.
I once saw a YouTube channel by Atchan from Oriental Radio that said not to underestimate the autonomic nervous system. If you can regulate your autonomic nervous system, a lot of things can be solved.
If you're interested, please take a look.
(I only remember the general idea, and the specifics of why and how are a bit hazy.)
Because it's hot, I want to drink cold things and eat ice cream...it's putting a strain on my internal organs.
First of all, don't let it get cold! Get along with your autonomic nervous system!
Don't forget that fatigue can actually be caused by the cold!
Azusa