Because toddler and newborn schedules don't match up yet, odds are their sleep shifts won't be in sync with one another for a while. (disneybaby.com)
Other than that, your lifestyle may not be in sync with your training program and as such not allowing you to recover fast enough to progress. (ashotofadrenaline.net)
There are many aspects of my professional personality, all of which are in sync with each other. (coverlettersandresume.com)