Well, this process of natural selection finally paid off...
Around 100,000 years ago, humans reached their evolutionary peak... evolutionarily speaking, humans were equipped with all the biological tools necessary for survival in the natural environment.
Strive to satisfy the survival of the fittest instinct, partake in physical training the way it was meant to be and make it a part of your lifestyle... and you will be rewarded with the physical abilities to meet the challenges of sport, work and life with excellence and the body that exemplifies those abilities.