Changes

It is long been recognized the athletes cannot train hard every day. Modern training plans recommend a few hard days per week, with the other days as easier or rest days. A lack of variety in training stress, known as training monotony, is considered a key factor in causing overtraining<ref name="OTEcssPos"/><ref name="OTDepression"/>. There is also evidence<ref name="variabledose"/> that increased training frequency results in reduced performance benefits from identical training sessions as well as increased fatigue.