How do you speed up a slow person?

There is a friend of mine who is generally slow (runs slow, writes slow, plays soccer slow, moves slow when organizing the office). Surprisingly he looks very athletic, with muscles and all. Is there a way to speed him up? I do know from growing up with him that from the time he was a kid, up to the present time he has managed to avoid physical activities (like basketball, playing with other kids, football, just running around, also avoided sports in high school). Is there a surefire way of gradually getting his speed to catch up with his physique?

This is presumably a good area for physical therapists but if you have an idea of a technical/structured way to speed him up lease feel free to chime in. The slowness might eventually affect his thinking speed.

Need to add that this is an incredibly intelligent person with an above average I.Q.

Use reverse psychology

you have to be patient...
he will notice if you mistreat him.

I agree with the other person reverse physiology will work but be carefull with his sentiments.

use speed games with him...
like "lets see whom can finish this faster"; put as a prize something that you know that he really likes...

Regardless... this is his personality.
You can't change someone's real "core" or inner person.
You can only motivate him to improve a "bit" BUT not to change it.

You cannot speed up a slow person. They may have a neurological deficit or disorder that makes them that way.

You'd have better success in working on accepting that they are this way.

Its also possible he has a very mild Muscular Dystrophy condition, (or other such disorder) which may not have been diagnosed and this causes extreme pain in the muscles if they try to play sports or be athletic.

Learn to accept him as he is and don't try to "fix" him. Find yourself another "fix it" project and be glad to have him in your life.