Parkour coach Ibrahim al-Kadiri, 19, and Muhannad al-Kadiri (top), 18, demonstrate their parkour skills in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. “I love competing with my friends to achieve the highest jump”, Muhannad says. (Photo by Alaa Al-Faqir/Reuters)





Muhannad al-Kadiri (R),18, and Ibrahim Eid, 16, demonstrate their Parkour skills over a military vehicle in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, demonstrates his Parkour skills amid damaged buildings in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. Ibrahim and his team members say the sport is a challenge against the bad conditions they have to endure because of the war. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, is seen demonstrating his Parkour skills from a damaged building as people watch him in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. (Photo by Alaa Al-Faqir/Reuters)





Ibrahim Eid, 16, demonstrates his Parkour skills in front of damaged building in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, drinks tea with his friends in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, works at his father's shop in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. At the beginning, the families of Inkhil Parkour members opposed the sport which they saw as dangerous. When they realised their sons didn't listen and continued to train, eventually acquiring new skills, they changed their views of the sport and started encouraging them. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, demonstrates his Parkour skills near damaged buildings in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. The team records their performances in photos and videos, which they post on social media. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, demonstrates his Parkour skills with his friend in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. Ibrahim says many team members suffered injuries, including broken toes and bruises. He himself injured his back: “Eight months ago, during an attempt to jump from high place, I injured my back and I stayed in bed for several days until I recovered”. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri, 19, demonstrates his parkour skills amid damage in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. Led by Ibrahim, the team trains on quiet days. (Photo by Alaa Al-Faqir/Reuters)





Ahmed al-Kadiri, 18, demonstrates his Parkour skills on a damaged building in the rebel-held city of Inkhil, west of Deraa, Syria, February 4, 2017. Injuries are frequent among the group; Ahmed once twisted his neck. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri (L), 19, and Muhannad al-Kadiri, 18, demonstrate their Parkour skills in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. Members of the group say Parkour takes them away from the atmosphere of war and helps them to take their sorrows away. It unloads their negative energy. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri (L), 19, and Muhannad al-Kadiri, 18, demonstrate their parkour skills over a bin painted with an opposition flag in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. “Parkour makes me a mythical man. It gets us out of the atmosphere of war and makes us forget some of our pain and sorrows, for when i jump from a high place I feel free and i enjoy the fun”, Muhammad says. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri (R), 19, and Muhannad al-Kadiri, 18, demonstrate their Parkour skills amid damaged buildings in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. Ibrahim discovered Parkour in Jordan, where he had fled to escape the war. Back in his home town since 2015, he now leads a group of 15 practitioners. (Photo by Alaa Al-Faqir/Reuters)





Parkour coach Ibrahim al-Kadiri (L), 19, and Muhannad al-Kadiri, 18, demonstrate their Parkour skills in the rebel-held city of Inkhil, west of Deraa, Syria, April 7, 2017. (Photo by Alaa Al-Faqir/Reuters)