As it turns out, sprinting develops a specific TYPE of balance...
Which the balance training you'd get from say...balancing on a tight rope.
Just imagine for a moment, running at full speed, with your arms and legs cycling as fast as they can...
And the ground blurring past you.
Now imagine if you fell in this exact moment.
It's not hard to imagine getting seriously hurt, possibly even dying, right?
Now imagine for another moment...
How many messages are being sent back and forth from the brain...
To each muscle in the body, in just a fraction of a second...
In order to AVOID falling. An enormous number, right?
And try to imagine what other exercise might require as information transfer as this.
Probably none right?
How many bicep curls a person would need to do...
To achieve the same level of mental workout as just 10 seconds of sprinting?
And so the theory is...
Just like how tiring out your body helps you to sleep at the end of a long day...
So too does tiring out your brain. Which is exactly what sprinting does for you.