Melissa Wilson, who hopes to make Great Britain’s rowing team at next year’s Tokyo Olympics, performs a homemade circuits session in a forest near her house in Gloucester. Photograph: Naomi Baker/Getty Images
Jana Messerschmidt, the world No 5-ranked woman in karate in the under 55kg weight category, improvises with a tree trunk in her backyard in Cologne .Photograph: Jörg Schüler/Getty Images
Palestinian bodybuilder Ahmed Tlatini uses breeze blocks to train at home in Gaza.Photograph: Mohammed Saber/EPA
Professional boxer Joshua Tukamuhebwa trains outside his home in Naguru, the birthplace for the majority of Uganda’s boxing champions.
Photograph: Sumy Sadurni/AFP/Getty Images
Olympic hopeful judoka Hadeel Alami uses her family’s sofa as a part of her training at home in Amman, Jordan.
Photograph: Muhammad Hamed/Reuters
France’s Alexandra Recchia, a former karate world champion, trains in the garden of her house in L’Hay-les-Roses near Paris.
Photograph: Franck Fife/AFP/Getty Images
New Zealand middle-distance runner Angie Petty trains on a treadmill in her garage in Christchurch.
Photograph: Kai Schwörer/Getty Images
Irish swimmer Brendan Hyland uses his door handles to improvise training at his home in Dublin.
Photograph: Tommy Dickson/Inpho/Shutterstock
German épée fencer Alexandra Ndolo trains with a self-made dummy fighter in her apartment in Cologne, Germany.
Photograph: Lars Baron/Bongarts/Getty Images
Swiss freestyle skier Fanny Smith, who won ski cross bronze at the last Winter Olympics, improvises her training at home in Villars-sur-Ollon.
Photograph: Anthony Anex/EPA