Jetlaga

Jet lag is not tiredness. It is a timing problem. Your body clock keeps running on the time zone you left, and until it catches up, the local day and your internal day disagree — which is why you can sleep eight hours on the plane and still be wide awake at three in the morning. Left alone, that clock moves about an hour a day when it has to move earlier, and about an hour and a half when it has to move later. A seven-hour shift is therefore the better part of a week, which is longer than many trips. Jetlag Away turns one specific flight into one specific schedule. Enter where you are flying from and to, when you depart and when you land, and the hours you normally sleep. It works out which way your clock has to move and how far, and builds the days around it. EVERY NIGHT HAS A BEDTIME The plan is a schedule, not a list of tips. Each night before you fly, your sleep window moves a…