Susan Gell and Roy Rodgers exercise their horse, Shoshoni, in Loch Lomond on Sept. 19 in Luss, Scotland.

Susan Gell and Roy Rodgers exercise their horse, Shoshoni, in Loch Lomond on Sept. 19 in Luss, Scotland.

Yoga instructor Tao Porchon-Lynch goes through yoga poses in her yoga class in Hartsdale, New York on Monday. At 93 years old, Porchon-Lynch was named the world's oldest yoga teacher by Guinness World Records.

Yoga instructor Tao Porchon-Lynch helps a student through a yoga hand stand in her yoga class.

Yoga instructor Tao Porchon-Lynch goes through yoga poses.

Yoga instructor Tao Porchon-Lynch hugs one of her students after leading a class.

Sun Fengqin (R), 60, participates in a pole-dancing class in Nanjing, Jiangsu province on April 27. In China, where older women are expected to lead a quiet life tending to their grandchildren, retired grandmother Sun Fengqin's hobby is unusual - she pole dances. Swings, spins and sultry moves are all in the repertoire of the long-haired 60-year-old, who took on pole dancing in admiration of what she saw as a sexy sport despite its image in China as something associated with strip clubs. Pole dancing has over the last few years evolved into a popular pastime and a way of staying in shape, with devotees promoting it as a legitimate form of dance and acrobatics.

Women stand during a session in the cryotherapy room at the Olympic Sports Center in Spala, Poland, on March 7, 2012.

Participants exit the cryotherapy room at the Olympic Sports Center in Spala, which became famous after it was used by the Wales rugby team.

Participants use the gym after a session in the cryotherapy room in Spala.

School children participate in a mass yoga session during the inauguration ceremony of the 22nd International Kite Festival at the Sabarmati Riverfront in Ahmedabad, Gujarat, India, Jan. 11, 2012.

School children participate in a mass yoga session during the inauguration ceremony of the 22nd International Kite Festival at the Sabarmati Riverfront in Ahmedabad, Gujarat, India, on Jan. 11, 2012. Around 120 kite enthusiasts from eight Indian states and 74 foreign kite flyers are participating in the festival.

A member of the United States Naval Academy freshman class wears body armor, helmet and carries a rifle through a mud-filled ditch as part of the "Wet and Sandy" challenge during the rigorous Sea Trials May 17, 2011 in Annapolis, MD. Under strict safety supervision, about 900 freshmen, or "Plebes," faced 14 hours of 32 rigorous physical and mental challenges during the trials, a daylong, action-oriented event modeled after the Marine Corps 54-hour Crucible and the Navy's Battle Stations.

Members of the United States Naval Academy freshman class participate in the pipe patching exercise during the rigorous Sea Trials May 17, 2011 in Annapolis, Maryland. Under strict safety supervision, about 900 freshmen, or "Plebes," faced 14 hours of 32 rigorous physical and mental challenges during the trials, a daylong, action-oriented event modeled after the Marine Corps 54-hour Crucible and the Navy's Battle Stations.

Members of the United States Naval Academy freshman class link arms and lay back into the Severn River as part of the "Wet and Sandy" challenge.

A United States Naval Academy freshman pours water out of her boot and eats a quick snack during the rigorous Sea Trials in Annapolis.

Members of the United States Naval Academy freshman class push through tough physical exercise.

Members of the United States Naval Academy freshman class Company 16 lead a two-mile run across the Naval Academy Bridge during the rigorous Sea Trials.

A member of the United States Naval Academy freshman class carries another during tough physical exercise.

Protesters doing their morning exercises at the continuing anti-government demonstration in Tahrir Square in downtown Cairo, Egypt on Feb. 10.

Anti-government protesters stretch in a street as part of their daily exercises after spending the night in front of the Egyptian Parliament in Cairo on Feb. 10. Around 2,000 protesters waved huge flags outside the parliament, several blocks from Tahrir Square, where they moved two days earlier in the movement's first expansion out of the square.

Anti-government protesters jog along a street as part of their daily exercises after spending the night in front of the Egyptian Parliament on Feb. 10.

School children attend a yoga exercise session during a camp in the western Indian city of Ahmedabad January 11, 2011. At least 6,000 children participated, organizers said.

School children participate in a mass yoga session during the third day of 21st International Kite Festival at Sabarmati Riverfront in Ahmedabad, Gujarat, India, January, 11. Around 96 kite enthusiasts from 36 countries are participating in the festival along with 150 Indian participants from ten Indian states.

School children participate in a mass yoga session during the third day of 21th International Kite Festival at Sabarmati Riverfront in Ahmedabad, Gujarat, India, January, 11. Around 96 kite enthusiasts from 36 countries are participating in the festival along with 150 Indian participants from ten Indian states.

Indian students perform yoga postures during the International Kite Festival in Ahmadabad, India, Tuesday, January 11. Kite-flyers from 36 countries are participating in the festival which runs from Jan. 9. to Jan. 14.