For a decent night's sleep and full relaxation of the bones and muscles, it is necessary to support the body equally in the shape that follows the natural curves of the back. Generally, it is accepted that the ideal lying position at night is the one in which the spinal colomn is straight in sideways position.
Para un buen descanso nocturno y para una relajación del cuerpo y de los músculos, es indispensable que el cuerpo esté llevado equilibradamente en una posición que apoya las curvas naturales de la espalda.