It used to be that group classes at gyms were broken into a few small categories -- men/women, high intensity/low impact and so forth. But gyms have started to offer special classes that are designed to benefit much smaller groups. Most recently, gyms are offering classes designed for people with certain conditions or illnesses.

Osteoporosis, cancer, and cardiovascular conditions are just a few of the health problems gyms are starting to target. Depending on the condition, the classes may aim to improve the symptoms and/or reduce risk factors for recurrence.

If you have a specific condition, talk to one of the trainers at your gym. (Or call a local gym if you don't have a membership.) Even if they don't have condition-specific classes scheduled yet, they may have other gym-goers who are interested. In the meantime, a trainer can design a program that works specifically for your health needs.