Step aerobics is a way to get in exercise to help you stay healthy and manage your weight. The calories burned in 20 minutes depends on your size and intensity.

Step aerobics improves cardiovascular health, builds muscle, strengthens bones and aids weight loss.

Increased aerobic capacity means having an easier time getting around. Whether it a flight of stairs or running after the kids, better aerobic capacity will make it a breeze. What can you do (and how much do you need to do it) for better aerobic capacity?

The long-term effects of aerobic exercise include improved longevity, a healthy body weight and reduced chronic disease risk.

Cross-training shoes are the best style of shoe for general fitness classes, but you might need something more specific depending on what you do.

From ballroom to hip-hop, dancing offers far-reaching benefits that include weight loss, muscle toning, improved cognitive skills and stress reduction.

Aerobics class is extra challenging when you don't know the lingo. It varies from region to region, but some of the most common names of moves are consistent.

"Aerobic" and "cardio" refer to the same: movement that uses the large muscles of the body to raise the heart rate and oxygen usage for a sustained time.

When treadmill walking becomes boring or tedious, incline or sprint intervals can add variety and boost the intensity of your workout. Increasing intensity for just a few minutes at regular intervals can help you gain more from your workout, according to MayoClinic.com.

Creatine phosphokinase tests are used to measure trauma to the muscles, including the heart. Abnormal levels may signify heart disease, severe injury or stress, or may be used to verify that a heart attack is occurring.

Following a regular exercise regime can provide you with numerous health benefits. According to the U.S. Centers for Disease Control and Prevention, or CDC, over 60 percent of U.S. adults don't get enough exercise.

Bradycardia involves having a heart rate of less than 60 beats per minute, decreasing blood and oxygen flow to your brain, according to the American Heart Association.