Cristiano Ronaldo and Zlatan Ibrahimovic's advice that Roger Federer didn't follow now raises concern for the tennis player

Roger Federer's physical trainer revealed that the return of one of the best tennis players in the world is close, but that there’s concern because his muscles are no longer the same as before. He revealed his muscles deteriorated.

Roger Federer is 39 years old and still belongs to the world elite, few athletes have this quality, because the life of a high performance athlete lasts only a few years, and this applies to all fields, in football it’s even much less for some excesses.

Athletes such as Cristiano Ronaldo or Lionel Messi will be able to play at the same level at least until the age of 38, especially in the Portuguese’s case, who is worthy of admiration because of his rhythm and lifestyle, that allows him to continue winning everything he sets out to do, he has no excesses, takes care of himself physically and especially in food.

There is another clear example in the football world, Zlatan Ibrahimovic, AC Milan player, is currently 39 years old and continues playing at a high level, his life is dedicated to sport. A proof of those who take care of themselves from a young age manage to have a more pronounced career.

Unfortunately for Roger Federer, the retirement time is getting closer and closer, in tennis players the joints that hit mostly due to their profession are the knees. The Swiss's problems have been coming for some years, despite the fact that he’s another one that takes great care of himself.

Cristiano Ronaldo's diet

Cristiano Ronaldo has a strict diet to keep his level at the maximum, his day-to-day is full of proteins, vegetables and very few carbohydrates, but in addition to this, he has a supplementation that allows him to avoid serious injuries, as revealed by the AS portal. CR7 consumes high amounts of collagen, something Roger Federer must have taken for a long time now to avoid his joints problems.