Cristiano Ronaldo is one of the best soccer players in the world.

For example, did you know that he has a secret nickname?

Or did you know aboutRonaldo’s recent breakup from Irina Shayk?

Cristiano Ronaldo smiling mid-match

Part of his success is strict discipline, and that includes staying away from alcohol.

He, too, experienced crushing family problems, and these encounters affect his actions today.

In fact, Ronaldo has sworn off alcohol, and it may not be for the reason you think.

Cristiano Ronaldo celebrating on the field

According toTech Times, Ronaldo’s father died at age 52 from alcoholism.

Yet another reason might be that Ronaldo has experienced heart complications before.

According toIndia Times, Ronaldo was diagnosed with a heart condition at just 15 years old that required surgery.