Other ways to prevent decompression sickness are to have a fit body, breathe normally underwater, hydrate before diving, and not drink alcohol before or after diving; Older people have a greater risk of contracting decompression sickness than younger people due to lower circulatory efficiency. Having proper dive training and proper equipment will help prevent decompression sickness or having a guild that demonstrates what to do in the water, such as descending slowly and ascending slowly and not getting on a plane after diving for at least 12 to 18 hours but 24 hours it is recommended to climb to altitude after the dive will only increase the risk of contracting decompression sickness and plan the depth of the dive and how