Women wearing "Shiroshozoku" or the traditional white robe pray as they bathe in ice-cold water at the Teppozu Inari shrine in Tokyo, Japan, January 10, 2016. About 100 participants took part in the Shinto ceremony to purify their souls and wish for good health in the new year. (Photo by Yuya Shino/Reuters)

Russian Orthodox believers take a dip in the ice cold water of a pond during the celebrations of the Orthodox Epiphany holiday, in Moscow, Russia on January 18, 2024. People believe that dipping into blessed waters during the holiday of Epiphany strengthens their spirit and body. (Photo by Yuri Kochetkov/EPA/EFE)

Allison Callender and Kent Willis, members of Mekanix Gym, a total wellness center, take a cold plunge in ice after a workout at the gym's Shadow Sanctuary facility during hot weather in Houston, Texas, U.S., July 19, 2023. (Photo by Adrees Latif/Reuters)

Children enjoy a sledge ride past ice swimming fans at the Zalew Zegrzynski lake in Nieporet, Poland, Sunday, February 25, 2018. A cold wave hit Poland with the temperature minus 8 degree Celsius (17.6 Fahrenheit) during the day and dropping to minus 16 degree Celsius (3.2 Fahrenheit) in the night in central Poland. (Photo by Alik Keplicz/AP Photo)

Eighty one-year-old Sakon Haba (L) wearing loin cloth walks past a police station after he bathed in ice-cold water at the Teppozu Inari shrine in Tokyo January 11, 2015. According to organizers, about 100 participants took part in the Shinto ceremony to purify their souls and wish for good health in the new year. (Photo by Toru Hanai/Reuters)

Hannah Maule-ffinch, “Wild Swimmers”, 2020, Hinksey Lake, Oxfordshire. Category: People. The series Wild Swimmers explores how humans are strongest when coming together in the face of adversity. In this photo, Emma and Emma have an amazing bond and friendship, built through their daily ritual of cold swimming in often bracing conditions. (Photo by Hannah Maule-ffinch/Earth Photo 2022)

“Contrails (short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals”. – Wikipedia

Photo: An airplane leaves a vapor trail as it flies in front of he moon on January 17, 2007 above Hanover, Germany. (Photo by Alexander Hassenstein/Getty Images)

In this May 17, 2017 photo, cowboy cook Odair Batista carries a case with food in Corumba, the Pantanal wetlands of Mato Grosso do Sul state, Brazil. Dressed with leather chaps on top of their jeans, stetson hats and a machete attached to their waists, before setting off, the men finish their breakfast with Terere, an herbal “mate” beverage served ice cold in an ox drinking horn. (Photo by Eraldo Peres/AP Photo)