For some people. Sleep monitors confirm that I consistently sleep from 7 to 8 hours straight through per night unless something external disturbs me. That's my

For some people. Sleep monitors confirm that I consistently sleep from 7 to 8 hours straight through per night unless something external disturbs me. That's my own natural sleep pattern. I cannot function on fewer contiguous hours long-term. I know. I've been through it several times in life and it was universally horrible. Some people function best with several shorter sleep periods. Other people function best with 1 longer one. The former can work just fine with a 12-12 schedule. The latter cannot maintain performance with a 6-6 schedule.