Ongoing stress can be harmful to your brain. Your brain size, structure, and functioning changes when you’re stressed out for a long time.
Stress responses are controlled by the adrenal gland in your brain. When a stressful situation arises this gland is activated and releases the hormone cortisol. Too much cortisol can lower your concentration, change your ability to make decisions, and make relationships feel harder to manage.
Exercise and meditation are the most effective ways to reverse the effect cortisol has on your brain. They both work to lower stress levels and improve concentration.