that when you ascend. In the emergency ascending you are suppose to constantly exhale all the way to the surface. otherwise your lungs might tear. When doing

that when you ascend. In the emergency ascending you are suppose to constantly exhale all the way to the surface. otherwise your lungs might tear. When doing next dive take a balloon with you and fill it with your air at the depth. Then go up. Otherwise when at same depth you don't have to worry too much about it. Disclaimer i am not an actual certified diving instructor.