As a neurologist, I find myself
prescribing exercise to patients because it is the most universal medicine for
anything that ails you. It helps regulate your body functions (glucose, insulin, blood
pressure), and it helps your body physically move better (muscles, joints,
bones). But what you may not know is, exercise can have a dramatically positive
impact on your brain as well.
Improved learning
and memory
Physical exercise
increases your heart rate and improves the flow of blood and nutrients to the
brain. These are thought to be primary factors for improving memory, learning
and the ability for abstract reasoning. Studies have also shown that exercise
increases the actual size of the hippocampus, which is the part of the brain
involved in verbal memory and learning.
Stronger brain
The human brain is capable of building new
brain cells (neurogenesis) at any age. Exercise plays a big role in this
process helping to increase neurons' creation, survival and resistance to
damage. The more you exercise, the stronger your brain will become.
Attitude adjustment
Your brain chemistry is positively affected by
exercise. When you exercise, your body releases endorphins (feel-good chemicals
that trigger positive feelings) and serotonin (neurotransmitter that works as a
natural antidepressant), which improve your mood. Physical exercise also helps
to reduce stress levels and anxiety.
Enhanced focus/attention
span
Exercise acts as a form of "moving
meditation," making it easier to concentrate on a task or become more
efficient. After a couple laps in the pool, miles on the bike or yoga poses,
you may find yourself forgetting your day's irritations and concentrating only
on your body's movements. As you regularly shed daily stressors through moving
meditation, you may find you can remain calm and clear headed in everything you
do.
In general, anything
that is good for your heart is great for your brain. It's never too late to
reap the benefits of exercise on both your brain and body. I always recommend
starting with activities you enjoy, but also to add variety and challenge to
your routine by trying something new. An activity with both physical and mental
demands (such as martial arts, ballroom dancing or rock climbing) has a higher
impact on cognitive function (thinking, reasoning and remembering) over just
exercise or mental tasks alone.