Think twice before getting a tatoo. Tatoos may have an impact on thermoregulation and potentially performance, especially in hot conditions.

Thanks Maurie Joe Luetkemeier, Joseph Michael Hanisko; Kyle Mathiew Aho and  Asker Jeukendrup for the info graph.
http://www.mysportscience.com/single-post/2017/06/29/Tattoos-may-alter-the-ability-to-sweat

Performance may be affected by tatoos in hot temperatures.