Manly’s mad scientist is at it again.

Under coach Des Hasler the Sea Eagles have become the first NRL club to have a walk-in cryotherapy chamber on site at matches.

The Daily Telegraph spotted a cryotherapy van parked behind the main Jane Try Grandstand during Sunday’s match against the Canberra Raiders.

Two security guards stood at the back entrance to Manly’s dressing room at fulltime and one by one players were ushered into the machine for a two-to three-minute session.

media_camera Manly are using a cryotherapy chamber after games this season.

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The chamber was backed up to the Brookvale Oval perimeter fence and is another example of Hasler’s fascination with sports science.

Cryotherapy helps players recover quickly. Ideally, they stand in temperatures of around minus 110 degrees but the chamber can reach minus 150 degrees.

Manly have been using Liverpool-based Cryo HQ, South Pacific, which claims its procedures help with “endurance, power and energy”.

Cryotherapy is an alternative to traditional ice baths and assists with pain relief, muscle recovery and weight loss.

media_camera Players are using the chamber immediately after games at the ground. (AAP Image/Joel Carrett)

“It’s good, it makes you really cold and then get warm,” Manly forward Jake Trbojevic said. “The contrast helps in the recovery.

“Three minutes in there and you’re out. You don’t get wet, which is good. It really helps.”

Cryotherapy has gradually entered rugby league over the past two to three years but Manly are the first to use it immediately after games.

“Cryotherapy really helps quicken and aid recovery,” Manly strength and conditioning head coach Don Singe said.

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The Cryo HQ, South Pacific website states the process can “increase the amount of oxygenated blood reaching your muscles”.

It adds: “Those who use cryotherapy report having reduced muscle pain and faster recovery time from injury.

“The sensation of being quickly and briefly subjected to extreme cold has been compared to the adrenaline rush of winning a martial arts bout or jumping off a cliff into water.

“Used by elite athletes around the world, cryotherapy submerges your body at below zero temperatures, increasing circulation and delivering multiple benefits.

“By subjecting your body to below zero temperatures, you’ll trigger a huge rush of blood flow around your muscles that will improve your energy and your stamina.

“This treatment is used on elite athletes around the world to maintain and improve their fitness while helping them to recover more quickly from injury.

“Big names who are fans of cryotherapy include LeBron James, Floyd Mayweather and Cristiano Ronaldo.”

It is understood Real Madrid star Ronaldo has a cryotherapy chamber in his house.

The NSW State of Origin side has used Cryotherapy for the past two seasons. Blues and Souths hooker Damien Cook is another who uses a cryotherapy treatment.

Wests Tigers winger Robert Jennings has also used cryotherapy to help with injury recovery.