Turning a Mattress
Turning a mattress is a task done to improve the lifespan of a mattress.
This is done by taking the mattress off the bed completely, turning it head to toe, turning the mattress over, and then repeating the head to toe turn.
By sleeping on alternate sides, this prevents wear to one particular area, and allows the fillings to settle more evenly.
Below is a video which shows the recommended way to turn a mattress.
It is recommended that a new mattress is turned once a week for the first two or three months, then monthly thereafter. This does not apply to no-turn mattresses.
One Sided Mattresses
No Turn Mattresses only have one sleeping surface, and so need only to be rotated regularly, not turned.