It's most likely delayed onset muscle soreness. If you're really interested in the technical aspects of it, feel free too read through this article written by Matthew Perryman:
Absolutely fascinating article. I've got a couple friends who are constantly bragging about their DOMS. Might point them towards thisIt's most likely delayed onset muscle soreness. If you're really interested in the technical aspects of it, feel free too read through this article written by Matthew Perryman: