Exercise for kids should be fun. Instead of working out, think of exercising with your kid as "exercise play." That's the term used by Ewunike Akpan, a personal trainer certified by the American ...

This is an installment of Good Fit, a column about exercise. I took my first CrossFit Kids class when I was 10 years old, the summer between fifth and sixth grade. I remember a circuit that involved ...

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. For years, my kids ...