Check these sites. One of them discusses REM in terms of age.
http://www.sleepdisorderchannel.com/stages/index.shtml
http://as.webmd.com/html.ng/transactionID=331074913&tile=1817728652&site=2&affiliate=20&hcent=1206&scent=&pos=131&xpg=1836&sec=1836&au1=1&au2=1&uri=%2fsleep-disorders%2fguide%2fsleep-101&artid=091e9c5e80007a34&inst=0&leaf=
how many minutes does an average college student spend in REM sleep?
1 answer