hello im getting better and better at going deeper but i have no problem equilzing on the way down but what about going up? i watch other people diving and freediving and they seem to do nothing on the way up. i feal a slight tighting in my inner ear when i resurface, nothing painful. is this normal? once im at the surface i swallow and everything is fine and im redy to dive again. is this what is suppose to happen? or should i try and stop before comming up and re equlize, i see guys freedive real deep like 100 ft and just come up as fast as going down.