There are 4 training principles:

1. Specificity

Every person will need a different training programme because we are all different.

The correct part of the body needs to be trained – there is no point making a weightlifter run 5 miles a day, as this will not improve his strength.

Train to the correct level – if someone is unfit, do not start them with a 5 mile run.

2. Progession

Gradually increase the amount of training that’s done when the body has got used to the previous training.

3. Overload

To improve, you must make your body work harder than it usually would, so you need to push yourself beyond the threshold.

You can do this by increasing frequency, intensity and duration of training.

4. Reverability

If you stop training, your fitness levels will drop.

It takes much longer to gain fitness than it does to lose it.