(Reuters Health) - Women who wait just a short time to become pregnant after delivering a child may put themselves and their next baby at greater risk for adverse events, a new study suggests. "We ...

Most solid training plans include a weekly speed workout, often in the form of intervals. But the length of those intervals usually depends on your race distance, training goals, and fitness level.

Interval training’s stock has soared in recent years. Is it any wonder, when it promises to deliver impressive health and fitness perks in a shorter time frame than other workouts? Sessions can be fun ...