Stress
Mark had a bad day at work. He came home and decided to go for a jog. Mark was not used to exercising and it was hard for him. However, he felt really good afterwards. Mark decided he was going to start exercising more often.
Mark decided he was going to start exercising more often. He came home and decided to go for a jog. Mark had a bad day at work. Mark was not used to exercising and it was hard for him. However, he felt really good afterwards.