Hi deeper blue, Ive been reading the posts on the site for a few weeks, but am just now getting around to posting. I am new to freediving (2 months, max depth 62ft) and i have a question about staying under longer. I am doing most of my dives at a local fresh water spring that allows freedives to the opening of a cave system at the 62ft mark where you must be cave certified scuba to enter. I seem to be able to get to the bottom just fine even with the current of the boil rushing to the surface but it seems that whether I dive to 40-50ft or go to the bottom I get a tight feeling in my chest that im guessing is due to the pressure and it makes me want to surface quckly. If anybody has any tips on what I can do to enjoy the scenery a little longer it would be appreciated. Also if anybody can recommend a local instructor that'd be frikkin fantastic!! All the dive shops Ive spoken with seem to be very Anti-apnea.