When’s the last time you felt jet lag – really felt it, your bones and your mind refusing to believe that it’s mid-morning and not the dead of night? Your muscles are screaming out – why are we not in bed? Or why are we in bed? 

Last month, I was in Australia for work, a whopping 14-hour time difference from my home in Virginia on the East Coast. And all that travel indeed affected my body’s natural clock. At 6pm in Australia, I was feeling the call of bedtime, then shooting wide awake at...