Sep. 17, 2013 at 2:34 PM ET
On Tuesday Prince Harry was just chillin' — literally — as he began training for a winter trek to the South Pole.
Harry, 29, spent the night in a giant freezer to get his body used to the frigid conditions he'll endure during an Antarctic charity race with wounded veterans.
After a 20-hour stay in a cold chamber at an Army test facility — surviving minus-31-degree temperatures and simulated 45 mile-per-hour winds — his royal highness the Princicle joked that it was a "cold night's sleep."
Four British servicemen and women who had lost limbs in Afghanistan joined him in the freezer. The group was closely monitored throughout the night as they simulated exercise on bikes and cross-trainers to prepare for the race.
Harry's team will face competitors from Britain and the U.S., trekking between 9 and 12 miles each day in the 200-mile Virgin Money South Pole Allied Challenge. The race is organized by the Walking with the Wounded charity.
Harry's not the only celebrity willing to face the frost. "True Blood" star Alexander Skarsgard will head the U.S. team, and Dominic West ("The Wire") will lead the British Commonwealth team.
When asked about the most challenging part of the experience, Harry said: "Going in."
The race begins in November and is expected to last about 15 days.