Exercise has long been linked to the cognitive condition of humans. Staying active helps improve the different functions of the brain such as the ability to think critically (or without bias). When a person moves or does cardiovascular exercises,<em> it stimulates the brain's central and peripheral growth factors.</em> This ensures the brain to function properly and to think critically. Besides, it also positively affects the person's sleep condition thereby reducing stress and related anxiety disorder.
D) if you stretch after a workout it gets rid of the lactic acid. but after you stretch or cool down it could potentially contribute to all of the above because the lactic acid restricts and makes other bodily functions more difficult