a of a verb or voice : showing that the subject of a sentence is the one doing the action expressed by the verb. âPickedâ in âI picked the applesâ is an active verb because it shows that the subject âIâ is the one who picked the apples.
Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight loss or weight gain. It adversely affects the brain and cognitive function. However, in a subset of cases sleep deprivation can, paradoxically, lead to increased energy and alertness and enhanced mood; it has even been used as a treatment for depression (see below). Few studies have compared the effects of acute total sleep deprivation and chronic partial sleep restriction.
1 Increased resting blood pressure. 2  Several studies have found that sleep deprivation leads to increased blood pressure (Fujikawa et al., 2009) and even half a night of sleep loss has been reported to increase blood pressure in people with hypertension or pre-hypertension (Lusardi et al., 1996).egative Effects of Not Getting Enough Sleep. 1  Lower stress threshold. 2  When youâre tired, routine activities, such as stopping at the grocery store on the way home from work, walking the dog or picking up the house can feel like overwhelming tasks. 3  Impaired memory.