(no subject)
Dec. 25th, 2018 01:16 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
Let's say, I wake up with a splitting headache that makes it practically impossible for me to take even a brief look at a computer screen. Then, I get on a bike and ride outside for fifteen minutes. And the headache is gone!
Why is that?
Why is that?
no subject
Date: 2018-12-26 06:01 am (UTC)(no subject)
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