From How Design Makes Us Think, by Sean Adams:

Film director Billy Wilder enjoyed daily naps limited to fifteen minutes. Friends Charles and Ray Eames designed a chaise lounge for Wilder to assist with the fifteen-minute rule. The chaise has a narrow profile. If Wilder began to sleep longer, his arms would fall to his side and wake him. The base is exposed and honest, the form follows the function of short napping.

Stephen Schenkenberg @schenkenberg