To Have and Have Not (film) became upset with Hawks. This caused an argument between Hawks and Bogart, stunting production for two weeks. Bogart recognized his power and used negotiation to his advantage. After negotiating with Warner, Bogart received an extra $33,000 salary, as long as Bogart promised to no longer stall production. In her autobiography, Lauren Bacall described what she called Hawks's "brilliantly creative work method" on set. She described that every morning on set, Hawks would sit with Bacall, Bogart, and whoever else was in the scene in chairs in a circle as a script girl read the scene. After reading through the scene,
Biphasic and polyphasic sleep one solid block, and he expresses concern that the ways in which the polyphasic sleepers' attempt to limit total sleep time, restrict time spent in the various stages of the sleep cycle, and disrupt their circadian rhythms, will eventually cause them to suffer the same negative effects as those with other forms of sleep deprivation and circadian rhythm sleep disorder. Woźniak further claims to have scanned the blogs of polyphasic sleepers and found that they have to choose an "engaging activity" again and again just to stay awake and that polyphasic sleep does not improve one's learning ability or creativity.