When it comes to scuba diving, there is one skill that is absolutely essential to remember: never hold your breath. This is the most important rule of diving, as failure to comply could result in death. The reason for this is that at the depths where divers go, fluctuating air pressure in your lungs can break your lung walls if you hold your breath. If you are interested in learning how to dive, there are three main agencies that offer certification courses: the Professional Association of Diving Instructors (PADI), the National Association of Underwater Instructors (NAUI), and Scuba Schools International (SSI).
The amount of underwater skills needed for successful diving is vast and goes far beyond what this publication could summarize. However, one factor that most contributes to the amount of weight you should add when diving is your own weight and body composition. In conclusion, it is essential to remember that never holding your breath while scuba diving is the most crucial of all diving safety regulations. If you are interested in learning how to dive, there are several certification courses available from reputable organizations.