Exercise regularly. In general, physical exercise is one of the best things you can do for your brain. It increases the production of new brain cells, slows down brain cell aging, can increase your levels of dopamine. Exercise has also been associated with improved mood and overall a better outlook on life.Exercise is recommended for boosting endorphin levels and improving mood. Improvements in mood can be seen after as little as 10 minutes of aerobic activity but tend to be highest after at least 20 minutes.