Clift says these exercises typically involve lifting the thigh towards the torso or resisting extension at the hip joint. “Examples include standing knee raises, leg lifts, lunges with a high knee ...

To help you out, I've put together six of the best interval training ... In addition, avoid doing too many high-intensity workouts per week—two to three is plenty to accelerate your progress. Make ...

Aim for 20 to 25 minutes of cardio exercise three days a week. If that sounds like too much, turn Wednesday into a low-stress ...