Cold water would have helped the nuclear reaction speed up again.

There were suggestions last year that, while as fit and as competitive as ever, his reaction speed was no longer the same.

No human could match his reaction speed.

He also played a solid defense at all three outfield positions, with an average arm and great reaction speed.

Work on reaction speed with a partner holding a target mitt.

Other factors such as temperature, pH, etc. can have a tremendous affect on reaction speed.

So he'd set his reaction speed to a level about twenty percent higher than any human could have matched.

It was claimed that this product would dramatically increase short term memory and reaction speed, taking effect within 60 minutes.

This allows for an increased reaction speed, and "feel" the driver perceives of the road.

(At lower temperatures the reaction speed is too slow for practical applications.)