"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." CROSS-TRAINING SHOES are the most versatile gym footwear around. They can be used to lift, run, and jump, ...

Despite the best efforts, sometimes there are moments when it's time to mix up your training and substitute some of your runs with another form of exercise to make those precious cardio gains, ...

Most gyms have an elliptical machine, otherwise known as a cross trainer. And chances are, someone's on it—and using it incorrectly. Sounds good, right? Ahead, fitness experts weigh in on everything ...