Objective To investigate the effects of high-intensity interval training (HIIT) and sprint interval training (SIT) on fat oxidation during exercise (FatOx) and how they compare with the effects of ...

I first tried the Norwegian 4x4 workout a year ago, and since then, it has become a staple of my fitness routine. I don't do it every week (some folks do), but it's a workout I keep returning to ...

Once you have a cardio routine you can stick to, start by building up to 30-minute workouts you can sustain at ...

Three years later, Culling almost cut her time in half, racing home in just 2hr 36min, qualifying to represent her country in distance running in the process. Now a coach at running app Runna, her ...