People sleep in a variety of locations. Some sleep directly on the ground; others on a skin or blanket; others sleep on platforms or beds. Some sleep with blankets, some with pillows, some with simple headrests, some with no head support. These [[choices]] are shaped by a variety of factors, such as climate, protection from predators, housing type, [[technology]], and the incidence of pests.[56] | People sleep in a variety of locations. Some sleep directly on the ground; others on a skin or blanket; others sleep on platforms or beds. Some sleep with blankets, some with pillows, some with simple headrests, some with no head support. These [[choices]] are shaped by a variety of factors, such as climate, protection from predators, housing type, [[technology]], and the incidence of pests.[56] |