The Conjugate system is based on increasing muscle tension by using three methods.

Maximal Effort method- Training at or above your 1 rep max
*Builds Strength*

Dynamic Effort method- Lifting sub maximal weight, at maximal speed
*Builds Speed and Power*

Repetition Effort method- Lifting sub maximal weight to failure
*Builds Muscle and Muscle Endurance*

Conjugate means “to couple or link”

The Conjugate system is used throughout the year since there is an unlimited amount of exercises you can use with it.
When you constantly change the exercises you are doing, you will not over train your Central Nervous Systems “CNS”.  
Simply put, you can train all aspects of fitness at the same time and continue to see results.