From textbooks to technology everything suggests moving a muscle or two is not only necessary for the body you always wanted and a healthier lifestyle but for a healthy brain as well, effects of physical exercise on brain are just like as its effects on one’s physical health. Exercise fastens pumping of blood as well as oxygen through heart to brain which boosts certain neurological tendencies of brain such as flexibility, plasticity of brain because of increased cell connections, secretion of mood lifting enzymes, stress handling capability, decision making ability, short term memory. According to scientific studies physical activity specially aerobics kicks formation of neurons in hippo campus, an area of brain related to long term memory and learning, increasing cognitive functioning and helping generation of mood boosting chemicals endorphins.
Though it’s a known fact that too much of anything isn’t good and same applies on exercise, but does that mean just some regular exercising comes with a promise of all things good when it comes to brain?
A recent research published by The New York Times says otherwise, quoting an experiment done on mice that showed adverse effects on long term memory of mice with increased physical exercise. It says even regular exercising can lead to dilute long term memory and cognitive functions.
This mice experiment gave strong ground to an earlier speculation that the growth of new cells instigated to higher levels(In some cases thrice the earlier level) by normal physical exercises like running, jogging or cycling sidelines the older cells containing information related to long term memory thus affecting behavioral or memory pattern.
These mice injected with a chemical to mark growth of new cells were made to associate to an area of threat when in cage, when taken out of the cage for the experiment some mice were made to do running while some were made to undergo a sedentary lifestyle, after some time when mice were reintroduced in the cage the mice kept away from physical activities showed signs of recognizing possible threat in the cage and displayed frightened behavior while the mice made to run during the experiment showed signs of faltered long term memory and seemed indifferent to the threat prone area in the cage. Proving aggressive tendencies of new born cells on older cells.
Though a similar experiment done by a scientist at denial of this study, showed no such signs when done on rats. Even though rats too showed multiplication of neurons to thrice the earlier level, no suppressive behavior was shown by them and older neurons behaved normally even under the stress of new born cells.
The studies shows maybe some long term memories are prone to be deleted or affected by the invading neurons while some are not.
Still there’s going to be a sufficient time before humans or species closer to humans could be experimented on to interpret the behavioral changes of neurons and suggest that there’s certain downside of exercise on our brain health.
Till that time exercise but keep a tab on your body’s capacity to deal with stress cos we all are different and so are our bodies.