7 part 2 Risky Exercises and Better Bets

No. 5: Squats on the Smith Machine

The problem: The bar on the machine doesn't give, which can force the body into risky positions. Plus, people tend to put their feet farther in front of their bodies when doing squats on the machine, which makes matters worse.

Squats: A Safer Alternative

It's not necessary to use weights when doing a squat, but if you keep good form, adding weight will intensify the move. Standing straight with your feet shoulder-width apart, slowly lower your body, back straight. Move the hips back as if you are going to sit in a chair. Try to maintain your weight directly over your feet, keeping heels on the floor. Lower yourself to about a 90 degree bend in the knee. Slowly return to a standing position.

No. 6: Bad Form on Cardio Machines

The problem: Hunching over or using a death-grip on the handrail cheats your body and can throw off your alignment, jarring your spine, shoulders, and elbows.

Better Technique on Cardio Machines

Don't set the incline or resistance so high that it causes you to hang on to the machine too tightly. Use a natural gait with a light grip. For a more challenging workout, hold on lightly with one hand and move the other arm, switching arms periodically. And save the reading for after your workout so you can focus on good form.

No. 7: Exercises for Spot Reduction

People who do strengthening and toning exercises in an effort to trim fat from a certain area -- thighs, hips, stomach, or arms -- have the wrong idea. Although these exercises can help firm muscles, if the targeted area still carries an extra layer of fat, it won't look much different. You can't isolate fat loss to one part of the body.

Best Ways to Reshape Your Body

Cardiovascular exercise will torch calories, but resistance training is a big part of the equation if you want to burn fat. Boosting your muscle mass increases your metabolism, so you burn more calories all the time, even when you're not working out.

Do You Need a Weight Belt?

Too many people wear weight belts too often. Unless you have a back injury or other medical reason -- or are lifting a lot of weight -- the weight belt may let your core muscles slack off. And you need your core muscles all the time in everyday life.

The solution: Back off the weight belt unless it's necessary.

Can Bad Shoes Trip Up Your Workout?

Even if you're doing everything else right, your efforts can be undermined by improper footwear. Working out with the wrong shoes increases pounding on the joints, and can lead to injuries like plantar fasciitis or tendonitis.

Shoe Solution

The key, experts say, is to choose a shoe that is specific to your activity and that suits your particular foot. They recommend shopping at stores specializing in athletic shoes, where you can seek advice from a knowledgeable salesperson. And don't forget to replace your shoes when they show signs of wear.