This chapter aims to specify different forms of static and dynamic stretching routines, and its effects on the development of strength. Furthermore, it has been suggested that concurrent training (combining several training modes, e.g. strength and aerobic training, strength and plyometric training, strength and speed training) has superior effects as compared to single training mode alone. Therefore, the modes of concurrent training, its training effect, and some precautions when designing the programs to meet the specific demands of professional athletes, are also discussed. Finally, since it is important to monitor training load to optimize strength gain and enhance performance level, and prevent over-training, several monitoring methods that can be used to monitor training such as training volume, session-RPE (rate of perceived exertion), and heart rate response are examined.