This high-efficiency workout style boosts heart health, builds lean muscle, and transforms your fitness routine — all without a gym.

Here are three versions of a circuit workout we did last week that simulates load-bearing, equipment carry, and log PT. All you need is a pullup bar, a sandbag and a place to run.

Many of us miss a workout day for various reasons that life throws at us, but have you ever considered doubling up on your workout to squeeze in what you missed yesterday? When doing a typical ...