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Why Memory Beds
Don't work with
Box Spring
Foundations |
There are two reasons why
regular box-spring
foundations should not be
used with visco beds and
mattresses.
Uneven Surface
First of all, all foam beds
are designed to easily shape
to whatever's applying
pressure. The custom shaping
effect of Tempur beds -- or
of any other brand, in fact
-- means that memory beds
shape to uneven surfaces
even better.
A memory foam bed used with
an uneven foundation becomes
uneven itself. The mattress
takes the foundation's shape
and becomes an unhealthy
sleeping surface. However
good memory foam may be, an
uneven bed surface does not
allow your muscles to relax
the way they are supposed to
and you may still wake up in
pain.
No pressure relief
Second of all, visco foam
mattresses and beds are
designed to absorb shock and
relieve pressure points.
When you lie on a regular
innerspring mattress, your
own body weight pulls you
down. Springs react by
pushing back against you.
The skin and blood vessels
are caught in the middle,
squeezed between the gravity
force of your weight and the
upwards force of the
mattress.
Pressure points constrict
circulation at the area of
contact. The result is
discomfort and even pain
over time. When you lie on a
visco foam bed, however
there is no air left in the
cells to push back and cause
discomfort.
Air is spread to adjoining
cells and the viscoelastic
bed simply 'melts' under you
to provide balanced support.
It is this very lack of
spring-back force in memory
foam beds that help relieve
pressure.
If you use a box-spring
foundation with the memory
bed, the pressure-relieving
properties of the visco foam
change. The foundation's
resilience ads a spring-back
force where there was none
previously.
The spring-back force in the
foundation is transferred to
the bed which then starts to
push back as if had springs.
This pretty much defeats the
purpose of memory foam beds.
You're more than likely to
dislike memory foam if you
try this during your home
trial period. |