It was similar for me. I'd get migraines a few times a year. I couldn't find any food correlation, but it seemed to often happen the day after doing strenuous activity, sweating a lot and drinking a lot of water. I started to suspect it was related to lack of electrolytes, so I began taking electrolyte solution after running or any other sweaty activity. In the few years since then, the migraines have been much less frequent, and about half as intense.
I did that once. I wanted to go for a run, and I also wanted to buy some soup spoons from Ikea. So I ran to Ikea (about 4km away), and had to walk through the store all smelly and sweaty. It felt inconsiderate to the people around me. Then I ran home holding the spoons. Running while holding things is awkward. So there's two reasons. I haven't done that sort of thing since.
I do this sometimes, but usually for a few groceries. What I do is put a carrier bag in my pocket and do a gentle run to the shop so that I'm not too sweaty. Then walk home with the groceries in the carrier bag.
Gridcoin is designed for this. It is based on scientific research and instead of sha256 hashes of random data, coins are earned by proof of your computer doing scientific research.
From their homepage:
> Examples include protein structure prediction (Rosetta@home), mapping the Milky Way galaxy (Milkyway@home), and tackling problems in public health and clean energy (World Community Grid).
It's not that it's evil to make money. It's that the most effective ways to make lots of money tend to be unethical, so a company whose sole mandate is to make as much money as possible will tend towards evil acts.
