Use your arms
Vigorously pumping your bent arms helps you go faster—and burn more calories, says Lee Scott, walking coach and director of WoW Power Walking in Toronto.
Take smaller steps
The best way to boost your speed—and thus your burn—is to take shorter, faster steps, Scott explains. Time yourself walking 100 steps, then recover for one minute. Count another 100 steps, and try to shave five seconds off your time. Repeat 12 times.