Through hard work and dedication, Cristiano Ronaldo has become one of the all-time greats.
To put his dedication into perspective, Ronaldo's ex-fitness coach Giovanni Mauri gave an insight into how Cristiano's mind works.
Did you say 2am gym sessions after a long away day in the Champions League? No problem.
"Cristiano is a phenomenon and an elite level athlete," Mauri explained to Tuttosport.
"He always trains to the best possible level because his way of working is comprised of three things: dedication, competitiveness and a positive attitude.
"We are talking about a world class player who, when we returned home at 2am from a Champions League away match, would not jet off home in his car.
"No, he would stop at the training centre for at least an hour for various recovery exercises and cryotherapy."
Ronaldo's application has never been questioned, and to add further evidence of his immense dedication to the craft, teammate Leonardo Bonucci has revealed all.
Asked what Cristiano Ronaldo brings to the table at Juventus, the Italian defender speaks incredibly highly of the five time Ballon d'Or winner.
"His intensity and his straightforward manner of playing," Bonucci said in an interview with AS.
"He's the first one to support the rest of the team with positive words. His manner of training is incredible, every day after training you'll find him doing extra session in the club gymnasium.
"There are times when his levels of stamina are simply staggering.
"He's a machine and I have great admiration for him."
Many players his age are easing into retirement, but Cristiano Ronaldo is getting stronger and stronger as the years go by.
I have nothing but respect for his constant graft.