Add in the fact that I didn't respond in your time frame does not mean I won't respond or can not respond. (religion.blogs.cnn.com)
This is important because your aerobic capacity is what determines how your body responds in times of physical, emotional, and mental stress. (truthaboutabs.com)
The car automatically brakes if the driver does not respond in time when the car in front slows down or stops - of if the driver is driving too fast towards a stationary object. (media.volvocars.com)