The number of people drowning while swimming is only 20 percent of the total.
The remaining 80 percent of all drowning accidents occur when the person is fully clothed,
such as boating, travelling or simply playing around the water.
Most people don't realise how hard it is to undress in the water, or to swim in waterlogged clothes if you haven't trained for it.
They often use up too much energy trying to get out of their clothes, or swim to shore, and drown before help can come.
Researchers have found recently that keeping clothes on is safer as it provides more warmth and buoyancy.
It may be that in many cases the fact that the person is wearing clothes may assist in survival,
but not then be recorded in police accident statistics.
Therefore, it may seem from official figures that, should an accident occur while fully dressed
the chances of survival may be reduced, when in fact the opposite is more likely.
That's why an increasing number of Japanese schools and universities are teaching survival swimming.
It's an easy lesson to add to the course work because nearly all schools in Japan have pools.
They already teach swimming as part of the physical education curriculum.
Eventually, all students will participate in this regular exercise.
Japanese research has shown that swimming in clothes
provides about twice the muscle building effect by increasing VO2Max levels.

Above all, have fun with survival swim training !