To make a treadmill workout more effective for weight loss, try high-intensity interval training (HIIT) by alternating short, hard runs with longer recovery walks. Change your treadmill routine often ...

Eighty-one? I shook my head and surreptitiously leaned over to get a better look at the number Sharpie’d on the calf of the tall, lean, and considerably older woman setting down her running shoes in ...