What is Interval training?

Interval training is where you break your training up into periods of time, or different intervals as opposed to training at a constant resistance and level of speed. Interval training replicates real road conditions such as climbs, down hill sections and times when you pull away from a standstill at junctions. An example of interval training might be 5-10 minutes of high resistance/low speed training, followed by 20 minutes of high-speed aerobic performance