Bathed in the fluorescent light of a sparse basement in Syria's war-torn Aleppo city, young boys pummel red punching bags under the close supervision of a former national boxing champion.
The rhythmic sound of gloves at Shahba boxing club can at times drown out the blasts of air strikes and shelling coming from eastern parts of the city.
Syria's second city Aleppo has been divided by a dangerous front line since 2012, with government forces controlling western neighborhoods and rebel groups the east.
Kattan, 31, began boxing professionally in 1994 and became Syria's national champion only a year later, going on to win gold medals across the region.