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 ...

Find flexible fitness classes, holiday camps and a massive soft play zone at Fit City Kids Chicago, where fitness and fun meet.

Nothing makes you feel exhausted like watching kids go full pelt. Indeed, kids have the kind of energy that most adults could only dream of. Most of the time they spend all day running around just, ...

Allow us to set the scene. You arrive ten minutes early for your group fitness class and station your mat in a quiet corner of the room. As people file in, someone sets their mat uncomfortably close ...