Could not agree more with @balancedmama. And here are my 2 cents that I have kept reserved for my 3 month old.

After reading many articles and viewing many shows in discovery etc, I am thinking that, speed and balance are 2 things that can make a strong base for further physical developments.

Where balance can be brought effectively by yoga and  gymnastics, I have copied a technique to improve reaction time from a research episode of discovery on martial arts, to design a little gadget.

Here I will only speak about my design and idea for improvement of speed and reaction time.

1 or 2 years ago, I was viewing an episode on martial arts which calculated their skills in terms of numbers. And the way they calculate the speed is really interesting. They have a pole with 5-6 pads sticking out with a light on every pad, the participants were then made to hit the corresponding pad as soon as light beeps and records have been made of their reaction times. 

Now I don't think I have to detail my idea and design. We can simply adapt the above idea to practice and I am damn sure it will work a miracle if practiced from an early age. We can replace the light with bells to make hearing as sharp as viewing.