A study was conducted on 259 Illinois third and fifth graders by putting them through classic PE routines: the “sit-and-reach,” a brisk run and timed push-ups and sit-ups. The math and reading scores were high with students who had fitter bodies.
If you have been putting off exercising it’s time to stop procrastinating. Exercise makes you smarter and what better reasons do you need to start exercising?
Scientists have also found that vigorous exercise can cause older nerve cells to form dense, interconnected webs that make the brain run faster and more efficiently. And there are clues that physical activity can stave off the beginnings of Alzheimer’s disease, ADHD and other cognitive disorders.
Greenough, a psychologist at the University of Illinois says:
If you’re thinking that by exercising at age 20 you’re going to have some effect on what you’re like at age 70, you’d better be willing to commit to 50 years of hitting the gym.
Aerobic exercise helps the heart pump more blood to the brain, along with the rest of the body. More blood means more oxygen, and thus better-nourished brain cells. Every time a bicep or quad contracts and releases, it sends out chemicals, including a protein called IGF-1 that travels through the bloodstream, across the blood-brain barrier and into the brain itself inducing production of several chemicals, including one called brain-derived neurotrophic factor, or BDNF.
With regular exercise, the body builds up its levels of BDNF, and the brain’s nerve cells start to branch out, join together and communicate with each other in new ways. This is the process that underlies learning: every change in the junctions between brain cells signifies a new fact or skill that’s been picked up and stowed away for future use. BDNF makes that process possible. Brains with more of it have a greater capacity for knowledge.












