The best way to breathe using either a snorkel or regulator is simply in a relaxed manner with full breaths.
- Be cautious when you first put the regulator in your mouth, and exhale first to remove any water.
- Breathe deeply, slowly, and continuously to get the most out of your lung capacity.
- Relax as much as possible. This will conserve your breathing gas.
- Try not to overexert yourself while diving. Keep a relaxed pace.