You can find out more about what happened to Mike here. You can also find out more about hypoxia "games" (a.k.a. choking games, hyperventilation games) at www.aheadofthegrief.me.uk.
If you've encountered my web pages, then you might have stumbled across this page. Today Mike would have turned 35. That's Mike on the left, and me on the right. Since he died in 1993 while playing hyperventilation games, my mom has been on a crusade to spread awareness of this dangerous practice. She's made a lot of progress, and was recently interviewed. You can see it on YouTube... (my mom is 2:20 into the video)
Happy birthday, little brother (who was actually taller than me).