Job Description: You design individual workout routines or teach group classes. Specialize in swimming or becoming certified to teach "accessible" yoga, for instance, which adapts techniques for people with chronic illness and disability. Water aerobics is also a big attraction.
Median Pay Range: $17 to $30 an hour, up to $60 or $100 or more per hour in larger cities (Fitness clubs may collect cost of session from members and give a percentage to you.)
Qualifications: Certification is not required by law, but you probably need it to work at most fitness clubs. For credentials, you must be certified in cardiopulmonary resuscitation (CPR) and pass written and practical exams. National groups offering credentials: American Council on Exercise, International Sports Sciences Association, National Strength and Conditioning Association.