False, exercise does have positive effects on the nervous system
Tyler will most likely touch his own nose to wipe off the spot.
At this stage, a two-year-old can recognize himself in the mirror and will know it is him regardless of the fact whether or not there is a spot on his nose. A younger child is likely to crawl away from the mirror because it won't recognize its reflection.
It helps prepare the muscles for the workout by gently increasing blood flow. It also helps loosen the joints. Warming up also gradually prepares the heart for increase in activity. It can also help prepare you for the workout mentally.