Working the body harder than normal and gradually increasing the amount of exercise you do.This makes the body adapt to the training levels and therefore getting fitter
What is reversibility?
the process of an athlete's body losing fitness levels
What is specificity?
Your training should be geared specifically towards your chosen sport or activity
What are individual needs?
Understanding ones individual needs will mean training is set at their level and accounts for their strengths and weaknesses
What is overtraining?
Excessive exercise that leads to physical and mental fatigue, decreased performance, and increased risk of injury.