During a dive, working all your body muscles simultaneously gives you a full cardiovascular workout. The muscles you use will require more oxygen making your blood vessels open for improved circulation to supply the oxygen your muscles need.
Diving allows you to meet people who have the same interest as you are. It is to relate to other when you two have something in common. Interacting with like-minded people is as exhilarating as descending into the deep when you dive.
Ancient people had been using saltwater to cure several diseases. Let the ocean take away all negative energies and vibrations from your body by diving more often.
Submerging into the saltwater and witnessing the utter beauty of the creature that lives in it will surely release those happy hormones. Plus, scuba diving is likened to yoga or meditation. Breathing slowly and deeply induces a relaxed state which promotes a positive attitude and prevent depression.
Achieve aerobic and anaerobic work without straining your joints too much by scuba diving. It is both a cardiovascular and muscular workout as you move against the natural pressure of the water your body.