The Secret of a Better Workout

Walking

Think about your feet. "Instead of moving through the standard heel-toe, heel-toe step, lead with your heel and roll through your entire foot before pushing off with your toes," says Carol Espel, an exercise physiologist and the national director of group fitness at Equinox Fitness Clubs. "This can turn a stroll into a power walk that also engages your shins," she says.

Also remember to...

Pump your arms. By making your stride more purposeful and energetic, you'll pick up the pace, which means you'll burn more calories and get a better cardio workout. Bend your arms at a 90-degree angle and punch them forward and back, rather than across your body.