Since a few years ago (maybe four or five) I'm following the advice the great pianists Arrau and Hofmann gave on their respective books. I think it's a healty habit. After a hard year of work and concerts, the body, mind and soul of the pianist must take a rest. Of course mind and soul (for those who believe on it) never rest but they are far more useful if they stop being interfered by a non stopping action. Their never ending growing, improving and maturing nature is benefited from being temporary out the daily practice rutine.
It's not that strange that many people feels that they play better from a creative point of view (although physically one normally feels quite a bit unskillful) after being 30 days without playing. The good news is that the original agility we use to have 30 days before recovers surprisingly soon!).
That's why resting piano is so important in my humble opinion. Also the body must rest. Playing piano, practicing piano is an intellectual and spiritual subject, but also a physical activity. Muscles must rest and recover from the damage the repetitive movements may do. You may also take the opportunity to do different things. Only you know what you really want. Playing tennis? Sports? Movies? Redesigning your web site (ahem...)? Reading books? Nothing?
But resting have a downside: I really feel the itch of returning to play. I can't wait but I do as long as I see ithe great bets of the temporary inactivity from the piano produces.
Happy hollydays!