AOL CEO Tim Armstrong starts his day at 5:00 a.m. but tries not to send too many early-morning e-mails.

The former Google executive tells The Guardian that he's "not a big sleeper" and wakes up at 5 a.m. or 5:15 a.m. every day to work out, read, tinker with the site, and hang out with his middle daughter, who is also an early riser.

Armstrong says he tries to hold off on sending emails until around 7:00 a.m.