Theory is redefining resolutions. Learn why April—not January—may be the ideal time to reset your goals and how to do it ...

Here's what to know about other supposedly productive periods — and what experts make of them. The April theory is something ...

The April theory is something that's been circulating ... If dreary January weather put a damper on your goal of, say, going for a run in the mornings, April's longer, warmer days might offer ...