Think about how you feel doing your 12-3-30 routine on the treadmill versus during a high-intensity interval (HIIT) class. You probably feel like you could maintain that first one for a pretty solid ...

Steady-state cardio focuses on keeping a consistent, moderate pace, while HIIT uses short bursts of hard work and short ...

In earlier times, movement was inherent in being human—our ancestors were foraging, running, walking, stretching, lifting, and bending throughout the day. In our modern world, however, many of us lead ...