Ok my friend has done this and it is definitely interesting. However, if you do polyphasic sleep, you age several times faster during that time, approximately a

Ok my friend has done this and it is definitely interesting. However, if you do polyphasic sleep, you age several times faster during that time, approximately around 5 times faster. So if you do Polyphasic Sleep for a month, you'll actually age 5 months. If you do it for 5 years, theoretically you will 25 years, whereas I believe the aging process accelerates every month. There are no research results on these numbers yet and it could be only 4 times faster, 10 times faster or accelerate by one time faster every month, however the reason for accelerated aging process is the fact that with Polyphasic sleep you only hit the REM phases of sleep, which regenerates your mind. So you can give your mind a break and it will be back to speed again, however you never hit deep sleep phases which is where the cell regeneration happens. So as long as you're doing Polyphasic Sleep, you are essentially going without cell regeneration, thus the accelerated aging process. So you have to be aware of the trade off between increased productivity to accelerated aging. However, Polyphasic Sleep for 2 weeks in a crucial time in your life (finals, startup just getting traction etc.) it can definitely be an attractive option, because it can improve your life dramatically and it doesn't really matter if your lose a couple of weeks of life span, since you can get it back when your can harvest your fruits of work. :)