Caporegime
- Joined
- 20 Oct 2002
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7, but i can sleep 12 easily if i get into a habbit of it.
There's no such thing really, it's what your body needs, my body naturally wakes up after 5-6hrs if I sleep well which I tend to do. If I'm physically/mentally tired my body will sleep longer. Then again I'm quite in touch with my body's requirements and my sleep reflects that.
Researchers from the University of Warwick, and University College London have found that lack of sleep can more than double the risk of death from cardiovascular disease, but that too much sleep can also double the risk of death.[10][11] Professor Francesco Cappuccio said: “Short sleep has been shown to be a risk factor for weight gain, hypertension and Type 2 diabetes sometimes leading to mortality but in contrast to the short sleep-mortality association it appears that no potential mechanisms by which long sleep could be associated with increased mortality have yet been investigated. Some candidate causes for this include depression, low socioeconomic status and cancer-related fatigue.” “In terms of prevention, our findings indicate that consistently sleeping around 7 hours per night is optimal for health and a sustained reduction may predispose to ill-health.”
there sort of is though
obviously there are probably individual variations but studies do show that 7 hours is optimal:
http://en.wikipedia.org/wiki/Sleep