Problem: You should train the energy system which you use predominantly (i.e. don't run 5,000 meters in training if you're a sprinter!) and the fitness and skill components most important to your sport, for example, agility, balance or muscular endurance. . Reversibility Use it or lose it! Basically, if you stop training then the improvements you have made will be reversed. So if you are ill or have a holiday and do not train for a period of time (even as little as a week) you may not be able to resume training at the point where you left off. Variance Try to vary your training, to keep you interested and to give your body a different challenge. A training method is the form of exercise you select to improve your fitness. The training method selected has a significant impact on training outcomes. Training must be relevant to your goals; this refers to the training principle of specificity. Those interested in improving strength and power may use weight or plyometric. Need Assignment Help?