Manchester United midfielder Fred is the fittest player in the Brazil team.

The central midfielder often does the most running for his country, which is similar to his style at club level.

The 29-year-old's endeavor means that he often loses a lot of weight during matches, according to Brazil physiologist Guilherme Passos.

Per Globo Esporte, Fred can lose between one to three kilos during a match.

“He has an absurd work rate, very high," said Passos.

“We had a match in the Copa America where he covered 12km.

“He's always our top one, top two in volume, in distance covered.

“In work rate, which means that he is all the time running through the field at high speed and moderate speed."