Take short, quick steps. Long strides are hard on the knees and actually slow you down. Instead, aim for steps just a bit longer than normal, landing on your heel and rolling through to your toes.

Get your arms in the act. Letting your arms hang down lengthens your stride and slows your pace. For correct upper-body posture, relax your shoulders, bend your elbows to about 90 degrees, and pump your arms harder.

Strengthen your shins. Shin muscles tire quickly when you start walking faster. To condition them for speed, walk on your heels or tap your toes while sitting. Do this for 30 to 60 seconds at least three times a day.

Feel the beat. You can't help but walk faster when you listen to fast-paced music-and it may also keep you walking longer.

Check your pace often. Walk at a track where you can estimate how long it takes you to walk Y4 mile. Let's say at your normal pace, it's 5 minutes. Next time aim to shave 5 to 10 seconds off each 1/4 mile. When you're comfortable at that speed, cut your time a bit more. By gauging your speed at frequent intervals, it'll be easier to achieve your goal.

Pair up. Walking with someone who's a bit faster than you can keep you from ambling.