About perspiration
We leave our cars and PCs idling so that 
we can use them as soon as they are needed.
In a sense, our bodies idle when at rest,
all the while releasing perspiration in the
form of an invisibile vapor.

How do we generate heat?
When you spray water on a garden, the garden cools
because the water carries away heat as it evaporates.
[eks] functions in reverse - as it powerfully adsorbs,
or collects, perspiration vapor, it generates heats.
This heat is known as “adsorption heat”.