Find Out What You—And The Competition—Are Made Of.


Built Not Born is based on the scientific understanding that all athletes can be graded on their proficiency in 4 specific performance categories:



The ability to keep the body under physical
stress for extended periods of time.


The ability to exert maximum
force against a weight or object.


The ability to create acceleration
in the body or an object.


The ability to exert strength
in explosive bursts of momentum.


Naturally, different sports will require increased proficiency in some categories over others. An offensive lineman might focus more on power and strength, while a wide receiver might value quickness. Certain track athletes, on the other hand, might make endurance their main focus. Regardless of position or sport, however, increasing performance levels in all four of these categories can help any athlete maximize their potential.


Leveling The Field. And Court. And Track. And...


Built Not Born’s training team utilizes nine standardized tests to assess an athlete’s current capabilities in the four areas mentioned above. The resulting data is then used to create an athletic score (AMS) unique to each athlete.

We created a proprietary algorithm to help normalize these scores so that athletes can accurately compare themselves to one another—regardless of sport, age, height, weight, and even gender. Our custom-designed algorithm uses machine learning to develop better, more accurate scoring with every new user.

Built Not Born has also partnered with an elite team of data scientists and statisticians  to review data and provide additional updates and upgrades in real time.


Athlete VS. Athlete


The physiological differences between men and women usually prevent male and female athletes from competing against one another. For example, men generally have a higher ratio of muscle mass to body weight, which allows for greater speed and acceleration. This explains why female sprinters are consistently ten percent slower than their male opponents and why, on average, female athletes possess about two-thirds the strength of men.


Women, on the other hand, are more efficient than men at converting glycogen to energy when their glucose levels drop. This is why female athletes generally excel in ultra-long distance sports and rarely “hit a wall” during long races. It also explains why ultra-running is one of the few sports where elite female and male athletes not only regularly compete together, but female athletes have been known to win.


Built Not Born not only enables athletes to accurately compare themselves based on normalized performance data, we enable and encourage them to share their progress, fuel their competitive fires, and—from that—forge optimal results.