Run faster and more efficiently with these moves.

HIIT can help improve speed and power, but longer, steadier workouts that you can do regularly, like swimming and rowing, are ...

Stand with feet together. Shift weight to right leg. Hold a weight in each hand down by sides. Keeping back flat, core engaged, and shoulders down and back, hinge at hips by sending glutes straight ...

Plus, exactly how to get results from whatever activity you love to do.

Obviously, it's important to exercise. But some sports and exercise regimes carry a greater risk of injury than others.

Harvard scientists find that exercise variety is good but not too much and only certain types. Take the findings with a grain ...