Complete bed rest refers to discouraging the person in treatment from sitting up for any reason, including daily activities like drinking water.

Placing the head of a bed lower than the foot is sometimes used as a means of simulating the physiology of spaceflight.
Complete bed rest refers to discouraging the person in treatment from sitting up for any reason, including daily activities like drinking water.
Placing the head of a bed lower than the foot is sometimes used as a means of simulating the physiology of spaceflight.
Bed rest