Aerobics is a form of physical exercise that combines rhythmic aerobic  exercise with stretching and strength training routines with the goal of improving all elements of fitness (flexibility, muscular strength, and cardio-vascular fitness). It is usually performed to music and may be practiced in a group setting led by an instructor, although it can be done solo and without musical accompanimentFormal aerobics classes are divided into different levels of intensity and complexity. Aerobics classes may allow participants to select their level of participation according to their fitness level. Many gyms offer a wide variety of aerobic classes for participants to take. Each class is designed for a certain level of experience and taught by a certified instructor with a specialty area related to their particular class.
Tips:

• Always warm up with stretches so that your body is ready for an aerobic workout.
• If you are indoors, make sure that your aerobic workout room is comfortable when it comes to temperature.
• If you are planning to use an aerobic workout video, watch it before beginning to exercise. This will give you an idea as to whether you will be able to successfully follow along with the program without injuring or straining your muscles.
• Always choose an aerobic workout video according to your level of experience. There is nothing wrong with beginner videos.
• It is best to consult with a physician prior to beginning any aerobic workout regimen.
• If you feel that you have pulled a muscle or have suffered another type of aerobic related injury, stop your exercise program and rest.
• If you are planning to enroll in an aerobic class, stop by and watch the class being taught before signing up.
• When participating in any type of exercise program, which includes aerobic workouts, always wear comfortable clothes that are preferably made of cotton.
• At the conclusion of your aerobic workout, always perform several minutes of cool down exercises to get your body cooled down and slowly returned to a normal heart rate.