There are many athletes out there who stick to what they are familiar with or are complacent in their daily routine. You may be the type of athlete who enjoys to run, or the athlete who insists on only calisthenics. Whatever the case may be, sticking to only one approach over time can hinder your progress and render you incomplete.
Let’s use runners for example; these athletes only train certain muscle groups in their body that pertain to their specific sport. Furthermore, they only train these muscles in one way – slow. Runners predominately work their legs with a little core thrown in, plus the obvious cardiovascular benefits. However, these athletes are lacking in the development of strength and explosive power. Both are significant for overall health and longevity. They are neglecting the remaining body parts and over time these specific muscles will fall farther behind the rest of the body. Over time the constant abuse to the same muscles in the same exact maker can lead to overuse injuries.
This also goes for the bodybuilder type who are in the gym, pumping iron 5-6 days week focusing only on their “beach muscles,” leaving little time to work on other important muscle groups. These are the individuals who will be missing out on other aspect of training and selling themselves short of their true potential.
The point I intend to make here, is that it will be more beneficial for an individual to train all muscles and systems of the body. Whether it be, power, strength or endurance; all are needed at some level to make up a “complete” healthy athlete.
Remain open minded, practice the major lifts; squat, deadlift, clean and press. Include calisthenics; push up, pull up, dips and sit ups. Bike, run swim and row as often as possible. Be creative with your training and do not be afraid to learn new sports. Be a complete athlete.