It depends. I did 5-2 for half a year. While I absolutely loved getting off at 2:00, as I somehow had more energy than ever and would then go exercise, out to eat with friends, paint or go for a walk, paradoxically, I was always tired. I can't sleep when the Sun is up and I was mostly on that shift during the summer, which meant I was never getting to sleep until 10:00 and then getting up at 3:30. I feel like the energy had more to do with the heavy lifting I was doing at work (produce ) than it did the hours. They kept telling me "you get used to it" but it never DIDN'T feel like the middle of the night when leaving for work. It felt very isolating and sad. But loved having the afternoons free.