Hacker News
- How much sleep do we really need to work productively? http://blog.bufferapp.com/how-much-sleep-do-we-really-need-to-work-productively 116 comments
- How Much Sleep Do You Really Need? http://www.time.com/time/health/article/0,8599,1812420,00.html 20 comments science
- How Much Sleep Do You Really Need? ("Sleeping 8.5 hr. might really be a little worse than sleeping 5 hr") http://www.time.com/time/health/article/0,8599,1812420,00.html?xid=rss-topstories 4 comments reddit.com