Lauren Bacall in "The Mirror Has Two Faces" (1996). Bacall was born Betty Joan Perske on September 16, 1924, in The Bronx, New York, the only child of Natalie ("née" Weinstein; 1901–1977), a secretary who later legally changed her surname to Bacal, and William Perske (1889–1982), who worked in sales. Both her parents were Jewish. According to Bacall, her mother emigrated from Iași, the Kingdom of Romania, through Ellis Island, and her father was born in New Jersey to parents who were born in Valozhyn, a significant center of Jewish life, in present-day Belarus, then in the Russian Empire. Soon after her
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.