Here are some easy ways to add variety to your cardio routine if it's getting a little boring. This training is often referred to as high intensity interval training or HIIT, but for the purposes of this article we'll just keep it nice and simple.

There are many benefits of this type of training and these include increased metabolism, shorter workout time and dramatic improvement in overall fitness.

The cardio interval training is performed in on/off or fast/easy periods of time, allowing for recovery, and you can use pretty much any time frame you wish such as: