Zachary Perez credits a free 15-minute video for improving his core strength and removing his neck, back, and shoulder pain.

After 50, the biggest risks are loss of muscle, loss of power, poorer balance, and stiff joints. These changes drive slower walking speed, more falls, and less independence. Strength, power, mobility, ...

I discovered spin classes a decade ago, and subsequently got certified to teach them myself. In the years since, I haven't focused on other kinds of cardio group classes—but for a time, I was obsessed ...