Celebs do it, so why shouldn’t you?  Bring along your personal trainer on your next trip. Don’t think you can afford such a luxury? Not true – you can get your own handheld personal trainer at pumpone.com. You choose your workout goals and personal preferences and download a personal training program to your iPod or Treo. You can then scroll through the exercises to see a full image illustrating each move, complete with simple how-to instructions and suggested reps. All the workouts are designed by Declan Condron, M.S., a certified strength and conditioning specialist, certified Olympic weightlifting coach and athletic trainer to the pros. The best feature? You can take this guy’s moves wherever you go – hotel room, airport, mountaintop, you name it. ($19 at pumpone.com)