Run suicides dude... not til your legs fall off because you don't want to get overuse injuries, but pace yourself... say start at 10-20 a day or every other day the first week or two, then move up to 30 every other day the next two weeks, etc... like catching a ball and throwing a ball with accuracy, to build up speed, etc takes practice & hard work. As for reaction time... I don't know - maybe get a prescription for adderal or ritalin lol.