There are ways to improve your brains ability to to work..... be smarter....

Exercise is one of the best ways to increase the optimum capacity of the brain.  Exercise causes the nerve cells to multiply, it strengthens the interconnections and protects them from damage.  During exercise, the nerve cells release proteins known as neurotrophic factor (BDNF).  These proteins then trigger chemicals that promote neural health benefits which increase cognitive functions that leads to better learning and greater blood flow and decreased risk of stroke.  A 2010 study in Neuroscience revealed that regular exercise improved blood flow, but also helped primates to learn twice as fast.  There have also been studies that show that exercise boosts mitochondria that increase the energy within the cells.  

LENS neurofeedback also improves the brain function.  It will help you to reach an optimum functioning, so that will help you get off the couch and not get those extra pounds that come with the holidays.  It can help to to tolerate the stress better.