There is a buzz around the internet about high reaction speed being related to IQ.
The swifter one's reactions are, the higher the IQ is supposed to be.
This is of interest to me, because I have super fast reactions.
For example, driving with my wife, at night, on an island loaded with deer, one must often take evasive action with almost no advance notice. Before my wife has even registered anything deer-shaped, I am on the brakes, and the car safely stopped, or almost stopped. This amazes her, but is inconsequential to me. I expect deer, and prepare, accordingly.
Some years ago, I was working at a Club Med, in Mexico, and one of the inane pastimes employed by the staff to entertain the guests, went like this...
Suspend a twelve-inch ruler, at chest-height, between thumb and index finger, by its twelve-end, with the one-end facing the floor.
Have the guest prepare to catch the ruler by placing their open thumb and index finger at the one-mark.
Randomly drop the ruler, with no warning.
Observe how glacially slow peoples' reaction times are.
Most would fail to catch the ruler at all, while a few managed to grasp it at about ten or eleven inches.
I could routinely grab it at one inch, or - at most - two.
You might try this, yourself, if you can come up with another willing body. It is illuminating. But here's a tip that will certainly help: You'll do much better if you can completely relax. And this, I imagine, also enhances intellect.
Neither preempt, nor stress-out.
Zero to sixty, outside of time