G'luck

Actually the people on polyphasic sleep are happy, energetic, and get a lot of extra time each day.

The biggest problem is it has almost zero tolerance. Miss your sleep time by an hour or 2 and it takes days to recover. And for most people living in a real world with a social life, with other people who are not on the same schedule.....and well its too easy to blow your sleep time.

Imagine beign at a party and having to go find a quiet nap time for 90 min while the party goes on......not !