When you are stressed the best thing that you can do is exercise.
Our bodies have a stress response mechanism called "Fight or Flight."
What this means is that historically when someone got stressed out they would either fight the other person or animal or run away. In our world that seems silly, but every animal has this mechanism. If those stress hormones aren't dealt with by a massive use of energy, they build up and cause damage.
When you are stressed out a much better idea than fighting someone would be to simply exercise! Not only for your cardiovascular health but for your brain health as well!
Article: https://news.byu.edu