Digital human modelling and ergonomic design of sleeping systems

Abstract Sleep is a vital activity for humans, and the good design of sleeping systems is a complex and multifactorial activity. Sleeping systems have to match several requirements: Perfect back support, optimal body comfort, good breathability, and ideal microclimate are the key elements of a quality bed system, but there is no rule that applies to everyone. Finally, there is the cultural factor: Sleeping is also a matter of habits. Specific needs also apply to different ages in our life: Sleeping systems of newborns and babies completely differ from those of adults, and then elderly requirements introduce other and more complex functions. Among these, mobility in bed and posture changes are also important. This chapter aims at presenting and analyzing the main factors to be considered in designing proper sleeping systems and several examples of solutions and methods. As a final consideration and looking to the future, sleeping in space is analyzed, when neutral body posture is assumed and it could be a reference also for some earth design.