Participants climb a 10km muddy obstacle course during the “Run Mud” race, on March 29, 2019 in the Israeli mediterranean coastal city of Tel Aviv. Over 6,000 participants took part in the obstacle race, with up to 18 artificial obstacles on three tracks (10 km, five km or two km). (Photo by Jack Guez/AFP Photo)

A lighting bolt flashes in the sky as U.S. Army M1A1 Abram tanks roll through the desert December 9, 2002 near the Iraqi border in Kuwait. (Photo by Joe Raedle/Getty Images)

Photographer Alexander Lepeshkin spends whole nights at Clumba parties, or costume parties where the young creatives of Russia put on their most flashy and drink. His photos capture candid moments of alcohol-enhanced connections and collapses, but he says he’s not a party photographer – he’s a youth photographer. Photo: A Loshadka party in St. Petersburg, 2010. (Photo by Alexander Lepeshkin)

Since 2005, photographer Sol Neelman, has photographed people having fun. More specifically, Neelman has documented the wacky and wildly diverse world of “weird sports”. Photo: Breanna Ziehlke encourages her frog to get on with it at the Calaveras County Fair & Jumping Frog Jubilee. (Photo by Sol Neelman)

A wild elephant that strayed into the town moves through the streets as people follow at Siliguri in West Bengal state, India, Wednesday, February 10, 2016. The elephant had wandered from the Baikunthapur forest on Wednesday, crossing roads and a small river before entering the town. The panicked elephant ran amok, trampling parked cars and motorbikes before it was tranquilized. (Photo by AP Photo)

A horse smiles at the camera. See the beautiful images of horses gleefully playing in Iceland mountain ranges. The horses have been spotted smiling and cuddling in remote locations across the nation. (Photo by Bragi J. Ingibergsson/Caters News)

A youngster with the Miami Seaquarium Spring Break Campers group gets a chance to touch one of two loggerhead sea turtles that are prepared to be released back into the wild at Bill Baggs Cape Florida State Park after undergoing rehabilitation at Miami Seaquarium March 13, 2012 in Key Biscayne, Florida. (Photo by Joe Raedle/Getty Images)

A participant runs through foam during the Love Foam Run race in Hsinchu, Taiwan May 29, 2016. (Photo by Tyrone Siu/Reuters)