Max, a hospitalised young boy with cancer, takes part in a sports session with an adapted physical activity coach and member of the "Sourire à la vie" association at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)

Keyssa, who has cancer, does exercises during a sports session at the "Chateau Sourire", an establishment ruled bt the association "Sourire à la vie" (Smile at Life) and dedicated to the well-being of sick children, in Marseille on January 23, 2026. Since September, the Chateau Sourire establishment, equipped to accommodate 25 children overnight and up to 100 during the day, has been offering completely free day or week-long stays, balancing play and care. (Photo by Thibaud MORITZ / AFP via Getty Images)

Enzo, an adapted physical activity coach and member of the "Sourire à la vie" association, gives a sports class in the room of Ange, a young boy with cancer, at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)

Enzo, an adapted physical activity coach and member of the "Sourire à la vie" association, gives a sports class in the room of Ange, a young boy with cancer, at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)

Enzo, an adapted physical activity coach and member of the "Sourire à la vie" association, gives a sports class in the room of Ange, a young boy with cancer, at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)

Keyssa, who has cancer, does exercises during a sports session at the "Chateau Sourire", an establishment ruled bt the association "Sourire à la vie" (Smile at Life) and dedicated to the well-being of sick children, in Marseille on January 23, 2026. Since September, the Chateau Sourire establishment, equipped to accommodate 25 children overnight and up to 100 during the day, has been offering completely free day or week-long stays, balancing play and care. (Photo by Thibaud MORITZ / AFP via Getty Images)

Max, a hospitalised young boy with cancer, takes part in a sports session with Tom, an adapted physical activity coach and member of the "Sourire à la vie" association at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)

Enzo and Sacha, adapted physical activity coaches and members of the "Sourire à la vie" association, lead a sports session with Rayed, who has been hospitalized since December 2025 in a sterile room following cancer treatment at the Timone pediatric hospital in Marseille on January 23, 2026. The "Sourire à la vie" association, which operates within the hospital, offers children with cancer to engage in physical activity during their often lengthy hospital stays. (Photo by Thibaud MORITZ / AFP via Getty Images)