hi anderson,
Some people do not experience contractions. This is not a bad thing. I will have numerous (not nearly as many as Eric) contractions when diving my limits. Recently, I was surprised when diving at altitude. I was getting contractions after only 45 seconds. A new personal best
You may never get contractions, however, I describe them as a physical urge to breath. My stomach and chest tighten causing my back to "hunch" slightly. Like Eric, I also get quite red and my skin around the neck and upper chest gets blotchy (this does wonders for my sex life - I'm too sexy for my skin). May you stay contraction free. Sounds like taht is the case if you do 3+min dives.
Warm Regards,
Aaron
