People jump into a swimming pool at the Jaref Valley hot natural water baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021. REUTERS/Khaled Abdullah 

People lie inside a tub of hot natural water at the Jaref Valley baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021.REUTERS/Khaled Abdullah 

People lie inside a tub of hot natural water at the Jaref Valley baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021.REUTERS/Khaled Abdullah 

People lie inside a tub of hot natural water at the Jaref Valley baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021.REUTERS/Khaled Abdullah 

People lie inside a tub of hot natural water at the Jaref Valley baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021.REUTERS/Khaled Abdullah 

People lie inside a tub of hot natural water at the Jaref Valley baths on the outskirts of Sanaa, Yemen November 12, 2021. Picture taken November 12, 2021.REUTERS/Khaled Abdullah 

A man jumps into a swimming pool at the Jaref Valley hot natural water baths on the outskirts of Sanaa, Yemen November 12 , 2021. Picture taken November 12 , 2021. REUTERS/Khaled Abdullah 

Boys jump into a swimming pool at the Jaref Valley hot natural water baths on the outskirts of Sanaa, Yemen November 12 , 2021. Picture taken November 12 , 2021. REUTERS/Khaled Abdullah 

A boy jumps into a swimming pool at the Jaref Valley hot natural water baths on the outskirts of Sanaa, Yemen November 12 , 2021. Picture taken November 12 , 2021. REUTERS/Khaled Abdullah 

Steam rises from the body of a devotee as he takes a holy bath in the Hanumante River during the first day of the month-long Swasthani Brata Katha festival in Bhaktapur, Nepal January 28, 2021. REUTERS/Navesh Chitrakar 

A man dresses after taking a bath at a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 16, 2021. Picture taken January 16, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf,Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A man relaxes in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19), in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

People take a bath at a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A boy stands next to his father as they visit a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath at a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A worker scrubs a man as he takes a bath in a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A man looks at his reflection in a mirror as he combs his hair during a visit to a "Hammam", a traditional steam bath, amid the spread of the coronavirus disease (COVID-19) in Najaf, Iraq January 15, 2021. Picture taken January 15, 2021. REUTERS/Alaa Al-Marjani 

A man smacks himself with a bath broom as he visits a public banya, or traditional Russian steam sauna, amid the outbreak of the coronavirus disease (COVID-19) in Omsk, Russia October 23, 2020. REUTERS/Alexey Malgavko 

A worker scrubs a man at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 7, 2019. Picture taken February 7, 2019. REUTERS/Mohamed al-Sayaghi 

People take a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People sit in a steam room at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People stretch on the ground of a steam room at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People have a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 7, 2019. Picture taken February 7, 2019. REUTERS/Mohamed al-Sayaghi 

People have a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

A worker gives a Turkish massage to a man at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People have a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People have a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

People have a Turkish bath at a newly-opened traditional Turkish-style steam bath in Sanaa, Yemen February 8, 2019. Picture taken February 8, 2019. REUTERS/Mohamed al-Sayaghi 

Wild ducks are seen on the Yenisei river, covered with evaporation frost, with air temperature at about -30 degrees Celsius near Krasnoyarsk, Russia December 4, 2018. REUTERS/Ilya Naymushin TPX IMAGES OF THE DAY 

Rugby Union - Premiership - Worcester Warriors vs Bath Rugby - Sixways Stadium, Worcester, Britain - January 5, 2018 A general view of steam during a scrum Action Images/Andrew Boyers 

Rugby Union - Premiership - Worcester Warriors vs Bath Rugby - Sixways Stadium, Worcester, Britain - January 5, 2018 General view of a steam cloud after a scrum collapsed Action Images/Andrew Boyers 

Rugby Union - European Champions Cup - Bath Rugby vs RC Toulon - Recreation Ground, Bath, Britain - December 16, 2017 Steam rises from a scrum Action Images via Reuters/Andrew Boyers 

A patient enters a steam bath at the rehabilitation area at Wat Thamkrabok monastery in Saraburi province, Thailand, February 7, 2017. REUTERS/Jorge Silva SEARCH "TEMPLE SILVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Patients prepare to take a steam bath at the rehabilitation and detox area at Wat Thamkrabok monastery in Saraburi province, Thailand, February 8, 2017. REUTERS/Jorge Silva SEARCH "TEMPLE SILVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Patients walk to take a steam bath at the rehabilitation and detox area at Wat Thamkrabok monastery in Saraburi province, Thailand, February 8, 2017. REUTERS/Jorge Silva SEARCH "TEMPLE SILVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Patients take a cool shower after having a steam bath at the rehabilitation area at Wat Thamkrabok monastery in Saraburi province, Thailand, February 8, 2017. REUTERS/Jorge Silva SEARCH "TEMPLE SILVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Turkish-German patient Cengiz steam bathes two days before his ordination as a Buddhist monk, at Wat Thamkrabok monastery in Saraburi province, Thailand, March 28, 2017. REUTERS/Jorge Silva SEARCH "TEMPLE SILVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A bather relaxes in a steam cabin at the Lukacs Bath in Budapest, Hungary June 28, 2016. REUTERS/Bernadett Szabo SEARCH "BATHS" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Customers wait before taking a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

Customers eat after taking a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

A worker covers a boy with towels after taking a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

Free Syrian Army fighters prepare to take a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

Free Syrian Army fighters prepare to take a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

Customers rest after taking a steam bath at al-Salhiyeh traditional hammam, at a rebel-controlled area in the old city of Aleppo, Syria January 26, 2016. Al-Salhiyeh traditional hammam reopened its door after four years of closure. Picture taken January 26, 2016. REUTERS/Abdalrhman Ismail 

Steam rises from the body of a devotee after taking a holy bath in River Saali in Sankhu during the Swasthani Brata Katha festival in Kathmandu, Nepal, January 24, 2016. During the month long festival, devotees recite one chapter of a Hindu tale daily from the 31-chapter sacred Swasthani Brata Katha book that is dedicated to God Madhavnarayan and Goddess Swasthani, alongside various other gods and goddess and the miraculous feats performed by them. The devotees also go on pilgrimages to various temples, perform religious rituals, take a holy bath in the rivers and fast for a month, especially among women who believe fasting helps in their family's well-being or in getting them a good husband. REUTERS/Navesh Chitrakar 

A small swimming pool is pictured in the garden of a house opposite of the Tihange nuclear plant of Electrabel, the Belgian unit of French company Engie, former GDF Suez, in Tihange, Belgium, December 29, 2015. REUTERS/Francois Lenoir 

A small swimming pool is pictured in the garden of a house opposing Tihange nuclear plant of Electrabel, the Belgian unit of French company Engie, former GDF Suez, in Tihange, Belgium, December 29, 2015. REUTERS/Francois Lenoir 

Men relax at a room full of steam before diving into cold water at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A worker holds a sign with a woman's image at the entrance of a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

Men relax at a steam room full before diving into cold water at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A man waits as a worker scrubs another man with a mud mask at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A worker scrubs a man as he's takes a bath at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A worker scrubs a man as he takes a bath at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

Customers wait as a worker scrubs a man taking a bath at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A man is cleaned after having a mask applied at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY) 

A worker scrubs a man as he takes a bath at a traditional steam bath "hammam" in Cairo, September 15, 2014. The "hammam", which was adopted during Turkish rule, is similar to a sauna. Local steam bath culture was recently revived in past years after they were made cleaner, with modern methods of beauty and relaxation introduced. Picture taken September 15, 2014. REUTERS/Asmaa Waguih ? (EGYPT - Tags: SOCIETY)