CRISTIANO RONALDO'S opponents will have to gulp even more now that he has invested in a high-tech oxygen chamber.
The 36-year-old Manchester United icon can inhale pure air directly into blood plasma at home, repairing damaged tissue.
“Everyone knows Cristiano is a fitness freak who is obsessed with being in top shape,” a source added.
“He'd used oxygen chambers in the past, but they're hard to come by in the UK, so he bought one and had it fitted at home.
That he can utilize it to relieve a discomfort and benefit from it.
“This is why he misses so few games.”
The HBOTS machine is in the Alderley Edge, Cheshire, house of the Portuguese striker and his pregnant partner Georgina Rodriguez.
After the Euro final in 2016, he utilized one while on holiday in Ibiza to speed up his recovery.
We reported last October that Ronaldo had a £50,000 ice chamber moved over to Old Trafford.
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We asked him to comment.
-7msport