Many were under age 35, enjoy strenuous workouts and were suffering immense hip pain.

Fitness studios are taking a holistic approach to health with greater emphasis on nutrition. Some are compiling recipes to keep members from derailing their fitness goals with poor eating habits.

Just about every gym has a variety of 45-minute classes, allowing you enough time to get in, get to it and get going.

Ellipticals combine the fluidity of running and low-impact motion of cycling, making them ideal for people with joint pain or who are overweight.

Some gadgets or workouts have been overtaken by trends that have emerged over the past few years, such as specialty studios and wearable tech