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Cristiano Ronaldo has reportedly installed a high-tech oxygen chamber in his home to help improve his fitness.
Ronaldo, 36, has managed to continue his impressive goalscoring record since joining Manchester United from Juventus last summer.
He's now scored 14 goals in 20 games this season but has faced criticism for his work-rate in matches, with some questioning his suitability for interim manager Ralf Ragnick's high-pressing brand of football.
According to The Sun, Ronaldo has now taken steps to improve his fitness by installing a hyperbaric oxygen therapy (HBOT) machine at his home in Alderley Edge, Cheshire.
The specially designed chamber will reportedly allow Ronaldo to repair damaged tissue quicker using pure oxygen delivered at an elevated atmospheric level.
The Portugal international is said to have used the same machine to speed up his recovery from a knee injury he sustained in the Euro 2016 final against France.
A source close to Ronaldo told The Sun: “Everyone knows Cristiano is a fitness fanatic and totally dedicated to being in the best shape he can be.
“He’s used oxygen chambers before in his career but they are not as easy to find in the UK so he decided to buy one and have it installed at his house.
"It means if he ever feels a twinge he can go and use it and get the benefits.
“These are the reasons why he misses so few games due to injury.”
Ronaldo is expected to feature when Manchester United next face Wolves in the Premier League on Monday night.
Rangnick’s side can move to within one point of the Champions League places if they win at Old Trafford.
Speaking ahead of the match, Wolves boss Bruno Lage hit back at those criticising Ronaldo’s performances this season and even offered the five-time Ballon d’Or winner a place in his squad at Molineux.
"He’s a machine," Lage told The Mirror.
"He just wants to score and score and score. He lives for that. He’s a massive player and every team in the world would want him.
"It’s football and everyone has an opinion. But if United aren’t happy with him then I have a place for him here, but I know they are happy with him.
"He started playing at the top level very young and he’s just continued at the same level."
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