The best way to breathe using either a snorkel or regulator is simply in a relaxed manner with full breaths. There are many breathing techniques that are taught in yoga and martial arts training, and these can also work in diving. A simple one is to make your exhalation twice as long as your inhalation.
- Be cautious when you first put the regulator in your mouth, and exhale first to remove any water.
- Breathe normally, slowly, and continuously to get the most out of your lung capacity.
- Relax as much as possible. This will conserve your breathing gas and sharpen your awareness—which will likely mean you see more—and have the best dive possible.
- Do not overexert yourself while diving. Keep a relaxed pace, do not rush, and remember to have fun.
- Check your SPG regularly, and communicate with your buddy when it's time to turn the dive.
- Never associate gas consumption with skill. Making your tank of gas last longer than someone else’s tank does not make you a better diver than that person.