Hello my name is Matthew, I am in the US Marines but i am currently stationed in Okinawa, Japan. I am still new to Freediving, but i have been getting better progressively faster. I started out by barely diving to 10ft. I just recently made a new personal record of 85ft and a static time of 4:31. I am constantly researching new ways to better dive. I plan on taking an AIDA certified class. Does anyone have any tips or tricks on how to hold my breath longer? Thanks