Head of Sports Science Ryland Morgans
The Swans play the first friendly of their American tour with a match against Colorado Rapids tonight (7pm local time; 2am UK).
Since arriving in Denver on Sunday night, the squad have held two training sessions as they look to fine tune themselves before taking on the Rapids at Dick's Sporting Goods Park.
While the MLS side will provide a stern test for Michael Laudrup's side, the team have another challenge to overcome.
With a combination of soaring temperatures and high altitude, the squad have a tough task ahead, as head of sports science Ryland Morgans explains.
"Our first training session was held in temperatures of 36C, which is something the boys aren't used to," he said. "That, along with the fact we are in high altitude, can make it very difficult.
"Anything above 2500m from sea level can lead to altitude sickness, or loss of breath - we are actually a mile above sea level.
"There's a lot less oxygen in the air where we are playing, so the players will struggle to breathe normally.
"That means they will feel as if they have played 90 minutes when they have played 45 minutes.
"Other factors in this heat include sun burn. If the players get sun burn then that damages your sweat glands and follicles, meaning you won't sweat properly which leads to your core body temperature raising.
"The other matters to take into consideration are jet lag and, of course, at this altitude there is less resistance in the air. That affects running and the movement of the ball.
"It can take seven to ten days to get used to. Obviously, we have only been here a few days so that is understandable.
"But the players have shown the right attitude. They know they have to battle through it, and that's what they are doing."
We will be bringing you live updates from the game via our website, along with our Twitter account @SwansOfficial