cooling down to lose weight has been a thing for a long
time.
the core of this idea is to create a cooling system that has
very very precise and fine control so that you can achieve
AND SUSTAIN a temperature that will not make you feel
too cold over the course of a few hours.
the body
can lose a tremendous amount of calories trying
to maintain warmth. this is an especially effective weight
loss method for those who cannot move well like the obese
or disabled, who sometimes cannot move at all.
sit in the tub, and burn calories and ordinarily you would
feel great discomfort and too much sensation of cold.
with this idea, you get to manipulate the temperature to
within a half degree faranheit , with the water changing
temperature at extreme speeds.
this kind of tub would have to be engineered to contain not
very much water , perhaps as much as your average bath
tub. it would have to be shaped like a jacuzzi with seat to
be comfortable for long periods of time. AND the
heating/cooling system would have to be dramatically
advanced. something as expertly engineered for comfort as
a Japanese electric toilet seat.