A man jogs at the steps of Santa Maria in Ara Coeli Basilica, as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy, April 26, 2020. REUTERS/Alberto Lingria 

A man exercises during the coronavirus disease (COVID-19) outbreak, in Chon Buri province, east of Bangkok, Thailand April 21, 2020. REUTERS/Soe Zeya Tun 

People wearing protective face masks exercise during the coronavirus disease (COVID-19) outbreak, in Chon Buri province, east of Bangkok, Thailand April 21, 2020. REUTERS/Soe Zeya Tun 

A man runs up steps in Liverpool, as the spread of the coronavirus disease (COVID-19) continues, Liverpool, Britain, April 19, 2020. REUTERS/Phil Noble TPX IMAGES OF THE DAY 

A jogger on the beach at sunrise in Tynemouth as the spread of coronavirus disease (COVID-19) continues in Tynemouth, Britain, April 15, 2020. REUTERS/Lee Smith 

A jogger runs on the beach in Tynemouth as the spread of coronavirus disease (COVID-19) continues in Britain, April 15, 2020. REUTERS/Lee Smith 

People exercise in Burgess Park as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 14, 2020. REUTERS/Hannah McKay 

A woman exercises at an empty sports ground during a partial lockdown imposed to slow the spread of the coronavirus disease (COVID-19) in Kiev, Ukraine April 10, 2020. REUTERS/Valentyn Ogirenko TPX IMAGES OF THE DAY 

A man exercises near Little Venice as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 10, 2020. REUTERS/Hannah McKay 

A person goes for a run in Northala Fields, as the spread of the coronavirus disease (COVID-19) continues, Northolt, Britain, April 5, 2020. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY 

A person goes for a run in Northala Fields, as the spread of the coronavirus disease (COVID-19) continues, Northolt, Britain, April 5, 2020. REUTERS/Henry Nicholls 

A man runs during a sunset at the Recreio dos Bandeirantes beach, amid the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil April 4, 2020. REUTERS/Sergio Moraes 

People walk and a woman jogs at sunset in Brighton, as the spread of the coronavirus disease (COVID-19) continues, in Brighton, Britain, March 24, 2020. REUTERS/Peter Cziborra 

People walk and woman cycle during the sunset in Brighton, as the spread of the coronavirus disease (COVID-19) continues, in Brighton, Britain, March 24, 2020. REUTERS/Peter Cziborra 

People walk during sunset in Battersea Park, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, March 24, 2020. REUTERS/Dylan Martinez 

A woman jogs during sunset in Battersea Park, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, March 24, 2020. REUTERS/Dylan Martinez 

A person is jogging near Tiber river, as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy March 18, 2020. REUTERS/Yara Nardi TPX IMAGES OF THE DAY 

A lone jogger makes her way along the National Mall amid a distinct downturn in tourists due to the coronavirus pandemic in Washington, U.S., March 16, 2020. REUTERS/Kevin Lamarque 

A man climbs up a wooden pole to get a prize in front of an Orthodox cathedral during celebrations of Maslenitsa, also known as Pancake Week, which is a pagan holiday marking the end of winter, in Vladivostok, Russia March 1, 2020. REUTERS/Yuri Maltsev TPX IMAGES OF THE DAY 

A man runs in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville 

Athletics - London Marathon - London, Britain - April 28, 2019 General view during the London marathon REUTERS/Toby Melville 

Instructor of aerial silks Val Martins performs during a class at the Boa Viagem (Good Trip) beach in Niteroi, Brazil April 4, 2019. Picture taken April 4, 2019. REUTERS/Pilar Olivares 

A man jogs next to the border wall between Mexico and the U.S., in Tijuana, Mexico, December 10, 2018. REUTERS/Carlos Garcia Rawlins SEARCH "ERLY MARCIAL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A swimmer participates in the annual Christmas winter swimming competition in the Vltava river in Prague, Czech Republic December 26, 2018. REUTERS/David W Cerny 

A man exercises on Barra da Tijuca beach in Rio de Janeiro, Brazil December 18, 2018. REUTERS/Sergio Moraes 

An HIV positive man strains a mixture of water and shredded leaves of the tropical tree guasimo in Caracas, Venezuela, December 10, 2018. Picture taken December 10, 2018. REUTERS/Marco Bello 

An HIV-positive man adds water to a blender with leaves of the tropical tree guasimo in Caracas, Venezuela, December 10, 2018. Picture taken December 10, 2018. REUTERS/Marco Bello 

Leaves of the tropical tree guasimo are seen in Caracas, Venezuela, December 10, 2018. Picture taken December 10, 2018. REUTERS/Marco Bello 

A man jogs next to the border wall between Mexico and the U.S., in Tijuana, Mexico, December 10, 2018. REUTERS/Carlos Garcia Rawlins SEARCH "ERLY MARCIAL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A woman runs along the Isar river covered in fog in Munich, Germany, November 23, 2018. REUTERS/Andreas Gebert 

A combination of illustrations shows apples, bananas, pears, celery, peppers, a head of lettuce, parsnips, a cucumber and onions, wrapped in plastic as bought in a supermarket, taken November 20, 2018. REUTERS/Lisi Niesner/Illustration 

A head of lettuce, wrapped in a plastic foil as bought in a supermarket, is seen in this picture illustration taken November 20, 2018. REUTERS/Lisi Niesner/Illustration 

Peppers, wrapped in a plastic foil as bought in a supermarket, are seen in this picture illustration taken November 20, 2018. REUTERS/Lisi Niesner/Illustration 

Pears, in a plastic punnet as bought in a supermarket, are seen in this picture illustration taken November 20, 2018. REUTERS/Lisi Niesner/Illustration 

Pumpkins are seen in a field at Pumpkin Moon in Maidstone, Britain, October 14, 2018. Picture taken October 14, 2018. REUTERS/Hannah McKay 

A pumpkin is seen in a field at Pumpkin Moon in Maidstone, Britain, October 14, 2018. Picture taken October 14, 2018. REUTERS/Hannah McKay 

Pumpkins are seen in a field at Pumpkin Moon in Maidstone, Britain, October 14, 2018. Picture taken October 14, 2018. REUTERS/Hannah McKay 

A pumpkin is seen in a field at Pumpkin Moon in Maidstone, Britain, October 14, 2018. Picture taken October 14, 2018. REUTERS/Hannah McKay 

Pumpkins are seen in a field at Pumpkin Moon in Maidstone, Britain, October 14, 2018. Picture taken October 14, 2018. REUTERS/Hannah McKay 

Various kinds of pumpkins, some of around 400 kinds grown this season, are pictured in this combination photo at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Various kinds of pumpkins, some of around 400 kinds grown this season, are pictured in this combination photo at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader 

Pumpkins, out of some 400 kinds on display grown this season, are pictured at Franzlbauer farm in Hintersdorf, Austria, October 22, 2018. REUTERS/Heinz-Peter Bader