1. Don't strangle to unconsciousness! Stop well before then, if you must do strangulation at all. Don't, in general, allow anybody to fall unconscious from oxygen deprivation.
2. Don't do any kind of breath control play if your partner has a cold, has any kind of difficulty breathing, or is on any medication (prescription or recreational). Take a Home First Aid or CPR class before you DO breath control play, so you can recognize the trouble points and deal with them if they come up. BTW this is a Good Idea for all BDSM'rs. Jay, anytime you wanna give your CPR class at my place, the space is free.
3. Do sexy breath control play by putting your hand on your partner's mouth and watching their eyes. You don't actually have to cut off their breathing, or at least not for very long, if your partner is a good enough actor/reactor.
4. Do fun pretend breath control, where you tell your partner sie is locked in a glass box and the air is slowly running out. Sie has five minutes to convince you with pleading expressions to let hir out as sie slowly gets weaker from lack of oxygen. Credit to Akasha of alt.sex.femdom for thinking up this one.
