How to Stay Healthy While You're On the RoadNow you're out of excuses.

By any mortal standard, Yamandu Perez's workout regime is impressive. The Chicago-based restaurant and bar owner, who did four Ironman races in one calendar year, routinely rises at 6 a.m. to run, bike or swim before pulling into the office. When he travels, he practices a floor-exercise routine in his hotel and seeks out local running or triathlon clubs. For Perez, who is working on opening his third restaurant, athletics are vital for his personal health and integral to his professional success.

"I'm never satisfied with my results," he says. "So I bring that to work. It doesn't matter how amazing we did today; there's always something you can learn."

Maintaining fitness while traveling often requires running a gauntlet of temptations and traps—from late-night meals to irregular sleep—that can derail your physical energy and your psychic motivation. Earlier this year, Omni Hotels & Resorts released a survey that found that 70 percent of travelers routinely gain weight on the road.