The effect of the mattress on the spine and the rate of recovery - Sleeping place 

Choosing a mattress is not easy, especially if you have back problems. Orthopedic mattress is on everyone's lips, but does it help?
At the present time, we can use a wide range of materials, but for a signal of reliable support, they must be crumpled, without springs.
Pillow: selection and testing in conditions close to life | Alexander Afonin
• Подбор подушки, живая ...
An example of an optimal place to sleep was a feather bed - a shield made of wood, covered with a body-shaped material, goose down without feathers and guard parts, i.e. clean. However, a straw mattress was also placed on a bench or bed, receiving the same principle - a shield and a soft layer on top.
Sleeping on a hard floor is harmful, only the reliability of the base and the comfort of the coating are useful.
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