British middle-distance ace Sebastian Coe once said, “I’ve always felt that long, slow distance produces long, slow runners.” To improve your run performance, you need a balance of easy days and hard, ...

I recently started working out after realizing my body needs physical activity. My job involves typing on a computer for 8+ hours a day, so my lifestyle is sedentary. While my workouts are sorted ...

Summer running sometimes offers up a serious challenge. As temperatures climb into the 80s, 90s, and even triple digits, your body has to work overtime just to stay cool—at the expense of your pace ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. November 10, 2025 Add ...