Musher Michael Ruopp of Germany starts with his sled dogs at the 23rd International Sled Dog Race in Oberhof, central Germany, Sunday, February 24, 2013. (Photo by Jens Meyer/AP Photo)

A man poses with his water buffalo during “Mekepung” traditional water buffalo race on July 28, 2013 in Jembrana, Bali, Indonesia. Meaning “to chase around”, Mekepung was originally designed as a fun game for peasants to spend their free time when the harvest time was ended, as they were waiting for the start of the planting season. (Photo by Putu Sayoga)

A competitor laughs while taking part in the office chair race ISU-1 Grand Prix in Tainan, southern Taiwan April 24, 2016. It was the first time such a race was held in Tainan, as part of the “ISU-1 GP” (Grand Prix) that began in Japan in 2010, according to businesses on Jhengsing Street and Haian Road in the city's West Central District and the city's Tourism Bureau, which organized the event. The fastest rider only took six seconds to complete the 30-meter race. (Photo by Tyrone Siu/Reuters)

Musher Justin Savidis' dogs wait in the truck before the restart of the Iditarod Trail Sled Dog Race in Willow, Alaska March 6, 2016. Mushers and dog sled teams from around the world embark on the first leg of Alaska's grueling Iditarod Trail Sled Dog Race, starting a nearly 1,000-mile (1,609 km) journey through the state's unforgiving wilderness. (Photo by Nathaniel Wilder/Reuters)

The Porsche 919 Hybrid No17 of the Porsche Team driven by Timo Bernhard of Germany is seen in action during the 83rd 24-hour Le Mans endurance race, in Le Mans, western France, Saturday, June 13, 2015. (AP Photo/David Vincent)

George R.R. Martin, Lena Headey, Sophie Turner, and other cast and crew of Game of Thrones have faced the winds of winter – or anyway, a bucket of ice water – with the popular charity challenge. HBO’s Game of Thrones gives fans chills in every episode. But as the Ice Bucket Challenge for ALS research has exploded across the internet, the cast and crew of the shocking show gave themselves goosebumps as they stepped up to get soaked.

Located at the foot of the Rocky Mountains on the North Saskatchewan River, the rare phenomenon occurs each winter in the man-made lake. Photo: Ice bubbles in Abraham Lake. (Photo by Chip Phillips/Rex Features)

A car enthusiast races at the Goodwood Revival historic motor racing festival in Goodwood, near Chichester in south England, Britain, September 11, 2015. The three-day event held each September at Goodwood Circuit since 1998 attracts thousands dressed in period costume who watch motor racing in vehicles from the mid-twentieth century heyday of the venue. (Photo by Toby Melville/Reuters)