Anyone who’s jumped on an air bike and put the pedal to the metal will know this cardio machine is a nasty piece of work. It batters your arms, legs and lungs—leaving you feeling like a lactic-filled ...

Author and motivational speaker David Goggins notoriously goes hard in the gym, and famously never skimps on his cardio. He coined the Goggins challenge, which involves running 4 miles every 4 hours ...

The assault bike may seem like the most boring piece of equipment at the gym, but this assault bike workout will totally change your mind. One way to make this process slightly less boring—while ...

There are approximately a zillion ways to get your cardio in nowadays. Walking, running, biking, stair climbing, rowing, skiing, swimming—the list goes on. You understand the importance of cardio, but ...

There are approximately a zillion ways to get your cardio in nowadays. Walking, running, cycling, stairclimbing, rowing, skiing, swimming – the list goes on. You understand the importance of cardio, ...

Every so often, a new type of workout seemingly takes the fitness world by storm. The latest in this long line of buzzy fitness fads: the Norwegian 4x4 workout, a high-intensity interval training ...