Walking is such a great physical activity. It's easy to do, requires no special equipment, and people of almost any fitness ability can do it. Beyond that, it's a perfect way to get the whole family involved in fitness. But if you're really trying to boost your fitness level, walking may not seem vigorous enough.

To get a little more out of your walk, you can pick up the pace. But be sure to do so safely and correctly:

• Pump your arms. Keep your elbows in (no chicken arms!) and keep your hands in loose fists. Pump your arms a little more quickly and your feet will follow.
• Tilting forward. Good Housekeeping recommends keeping your back and head straight, but leaning forward a little bit. Other sites disagree with that advice, though. Try the lean and see if it's comfortable for you. Remember -- lean or no lean -- keep your back straight and don't hunch over.
  
• Tighten your tummy. Keep your stomach muscles tight and raise your upper body while walking.
• Keep a natural stride. When you're trying to walk faster, the natural tendency is to elongate your stride. Resist that urge and keep a comfortable, natural stride.