Interval Training: refers to the concept of alternating between periods of higher and lower exercise intensities. For example, alternating between relatively short running and walking intervals. There's usually (but not always) a pre-determined structure eg. 30 seconds running, 60 seconds walking...

This form of exercise is in contrast to 'Continuous Training'. Example: a 40 minute jog at a steady pace.

The main benefit of interval training, is that it allows you to spend time exercising at a higher level compared to continuous training. When planned properly, interval training can therefore be significantly more efficient and less time-consuming, while producing the same (often superior) results!

While it is possible to train with intervals in a random way eg. slow down/speed up 'whenever you feel like it'... this may not be the most efficient way to produce specific, target results.

Designing an Interval Training programme correctly will produce more predictable outcomes. For example, by controlling exercise intensity, interval times, rest times, workout duration and workout frequency, Interval Training can be modified to produce target results while also allowing for your programme to be adapted to suit your lifestyle.


'High Intensity' Interval Training predictably requires exercise intensity to be greater than other Interval Training methods. Not only can this lead to impressive results, but also allows for workout duration to be much shorter ('Tabata Training', an example of VERY high intensity interval training has been shown to produce results via workouts that last for just 4 minutes!) ...

...HIIT essentially follows a 'Quality over Quantity approach - ideal if you are short on time!