I've only heard of the term and dangers of Free Diving a couple weeks ago when I joined this forum, although I've been spearfishing since the 70s for a couple weeks every few years when I go on vacation to Algarve Portugal. Since I don't anticipate having a buddy with me while diving the question is: if I don't hold my breath for longer than 60 seconds I don't think I have to worry about blackouts, is this correct?