How Tattoos Might Affect Your Workout

“The body recognizes these injections as abnormal. They have slightly damaged the tissue and left behind a foreign substance, the ink. So the immune system gears up, sending a variety of cells to the site of the inking. Some cells carry off tiny amounts of the ink, primarily to the lymph nodes, where it dissipates. Other immune cells merge with the remaining ink, so that both become long-term residents of that portion of the skin. Still other cells initiate an inflammatory response, helping the injured tissue to mend, which it usually does within a few weeks.”

https://www.nytimes.com/2017/07/26/well/move/how-tattoos-might-affect-your-workout.html?rref=collection%2Ftimestopic%2FTattoos&action=click&contentCollection=timestopics&region=stream&module=stream_unit&version=latest&contentPlacement=10&pgtype=collection