It can be a chemical imbalance in the brain, a traumatic event, bad home life, etc.
The best answer to the health and workout question above would be overload. It is evident that the person developed knee pain from running everyday - a sign that the knee was put on a greater amount of stress. This principle of sport training is called the overload and is used to strengthen the ability of that certain muscle to work efficiently.
Answer:
I'd say fear and if they see say the woun that also makes it feel worse
Explanation:
hope this helped