This has become my natural way of sleeping as an adult. I very rarely sleep for more than six hours straight without waking up, and not just for bathroom obligations. I’ll often wake up around 3.30 or 4am, then, if i have time, I will go back to sleep for a final ‘dream cruise’ until 6.30 pr 7am.
I thought it was just me. Started for me about 5 or so years ago. I wake up routinely from 2:30 - 4:30. Come downstairs and cruise FR or play a game. Pass back out an hour or so later and usually sleep pretty good until 6:30 or so.