Additional tips for safe diving: Always dive with a buddy. Gently equalize your ears and mask as you descend. Never hold your breath while ascending. Always ascend slowly while breathing normally. Never drink alcohol before a dive. If you`re taking medication, check with a doctor before diving. Also consult your doctor if you have any medical conditions. Don`t fly for minimum 12 hours after a no-decompression dive, 24 hours if your dive required decompression stops. If you don`t feel well or are in any kind of pain after your dive, get to the nearest emergency room.