Contrary to popular belief, older people do not need less sleep than younger adults. However, the line graphs show that they awaken more often during the night. The numerous awakenings are one reason why some elderly individuals report that sleep is less restful than it had been in the past. Use the line graphs to solve Exercises 57–60.At which age do men have the greatest number of awakenings during the night? What is the average number of awakenings at that age?

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Awakenings Number of During the Night 9 87 65432 1 Average Number of Awakenings During the Night, by Age and Gender 10 20 Mon 30 40 50 Age (5 through 75) Women 60 70 80