Sleep also relies on some social situations and is influenced by several factors and periods of a persons life. These factors include care-giving/parenthood, widowhood, co-habitation. For example if you have recently had a child, your sleeping patterns will be disrupted frequently as babies oftentimes awake multiple times in the night. Sleep is not static and changes in consistency and quality depending on the state in which your life is in and the situations around you. Sleep also differs between genders and ages, for example a middle aged man would not sleep as often as an elderly man or infant.