Do they? You'll be amazed. Vacations when planned, tend to get you to be as productive as sitting in your office. Plus they give you the time to dream up new projects, and time for your brain to relax.
Don't buy into the humbug of 'work, work, work.'
Um, if you're new in 5000bc, start by asking for a Cave Guide (who will show you around and help you to get great value from 5000bc. A Cave Guide is someone who's warm, friendly and has been a member–and can help you). Email me to get a Guide.