Being on the road is no excuse for sacrificing your fitness. Before booking a hotel, ask the concierge about the hotel gym, or search the Web to find a full gym close to your preferred hotel, then ask its membership manager for a weekly or daily pass. (Be sure to allot 30 minutes during the first visit for walking the gym with the membership manager.) Some day passes may even be free, like at the YMCA; or find boutique gyms that offer a free first-timer day pass.