https://www.wired.com/story/the-science-is-extremely-clear-you-need-to-prioritize-sleep/

When I was in college, I informed my parents that they could stop hoping I would achieve anything close to greatness: I simply needed too much sleep. While President Barack Obama was up late sending emails and writing letters into the wee hours, and all my friends were telling me they could “sleep when they’re dead,” I was snoozing away critical hours.

Compared with giraffes, which zonk out for just 30 minutes a day, or dolphins, which rest only one-half of their brains at a time, I—who will gleefully luxuriate in nine hours of shut-eye now and then—am basically a lump who occasionally has wakeful moments.