Flying the red-eye to London used to mean showing up at your business meeting with rumpled clothes, bedhead, and a stiff neck. Now the layover blues stop at the polished wooden doors of Rejuve, the new "well-being" club at Heathrow, open to all passengers for a day-membership fee of $47. Nip jet lag in the bud with a "global reenergizer" treatment (a 60-minute neck, shoulder, and back massage and a lime-oil mini-facial), followed by a luxurious power-shower and a Kombucha energy drink in the low-lit lounge. The club also makes long layovers fly by: Jump-start your circulation in the full-service gym, or simply check your hand luggage with the front desk—the better to trawl those fabulous Terminal 1 shops. Terminal 1, International Departures; 44-84/5222-2644;