The most arrogant football player to many, Cristiano Ronaldo seems to have a big heart: he refuses to get a tattoo just so he can continue on donating blood.

Apparently, Ronaldo donates blood very often (at least twice a year). He was also a bone marrow donor after witnessing the struggles of one of his teammates’ child.

The reason behind his choice is mainly that, in many countries, tattoos can impact a person’s eligibility to give blood due to risks of cross-contamination.