Twas the flight before Christmas, and from early check-in to final approach you feel your inner Scrooge stirring, in need of a holiday coach. But before you shout at small children or strangle your mate, here is a body/mind/spirit crosscheck to get your New Year wig on straight:

 Namaste-stay-away: Skip heavy and hard-to-digest food for 24 hours prior. Even some healthy foods can make you gaseous (hi there broccoli and cauliflower!), so consume with care. Caffeine, carbonated drinks and alcohol will dehydrate you and magnify the unfortunate effects of the pressurized cabin.

 Inhale & Exhale: Take the stairs instead of the escalator—a ten-minute walk around the airport will enhance your in-flight circulation. Getting your heart beating faster transports oxygen rich blood to your muscles and improves cellular respiration, even while…