What is the opinion of Reddit about the
Running Anatomy?

1) this may simply be your muscles getting used to the motions of running, or perhaps your running gait may somehow be incorrect; wrong running mechanics may injure you in the future.

2) if this happens after you’re finished running…you just might be tired from finishing a good run 🙂 … or you could be pronating.

a very good book on the basics of running is Running Anatomy it gives you a very good base of knowledge for running.

It does as one is moving the body through space against gravity.

See one example: Running Anatomy https://www.amazon.com/dp/0736082301/ref=cm_sw_r_cp_api_i_naMtFbHHXE9SG