Do you swim with a wetsuit? For people who enjoy freediving, surfing, swimming in the ocean’s deep waters, snorkeling, and spearfishing, a wetsuit is a valuable tool. Because ocean water is cold, wetsuits insulate a swimmer and help to retain body heat.
When a swimmer retains body heat, he or she avoids the dangerously low body temperature known as hypothermia. Hypothermia can kill a human because the body’s core temperature falls below the normal temperature of 98.6 Fahrenheit. When the body falls below normal temperature, vital parts of the body are in danger of ceasing function, including the heart, brain, lungs, etc. In short, hypothermia can kill you.