If a bee sting on the right thigh causes a quick involuntary reaction of the right arm, this would be an example of an intersegmental reflex. This is an unconditioned reflex.
what kind of sports did babylonians
Generally speaking yes, the training for most sports embraces reaction time.
Almost all kind of sports. (On the Earth)...... In space, there is no time and/or environment for sports.
A chemical reaction.