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by vjk800
1199 days ago
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I don't have the source at hand, but I read somewhere that in many hunter-gatherer societies, pretty much all people walk 15-20 kilometers every day. Coincidentally, this is approximately equivalent to the the amount of exercising I need to do calm my anxiety down. Maybe anxiety is just some kind of exercise-deficiency. After all, we were made to move around, it's entirely plausible that many biological processes in our bodies just don't work well while sedentary and our anxiety is trying to tell us that. |
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Muscle contractions function as the heart for our second circulatory system.
https://en.wikipedia.org/wiki/Lymphatic_system
A few animals have an actual second heart for that, but we don't—we have to move to make it work well.