The Swimex swimming school was celebrating its anniversary. As part of the celebration, students were invited to blow out candles on a cake to test their lung capacity and endurance. A sensor measured each student's breath strength as they blew out the candles. The students who blew out the most candles would win five free months of swimming lessons at Swimex. The event highlighted how the swimming lessons at Swimex for 15 years have helped improve students' physical abilities and lung strength.