Mindfulness and Meditation are great ways to cope anger
Positive and negative interactions greatly affect participation in a physical activity. For positive interactions, it encourages participants to have physical activity thus having physical function. Companionship with friends also is a positive effect especially with adolescents. On the other hand, negative attitude would mean the participant would not exert any effort in participating any activity.
You would use the CINAHL database.
the answer is the medulla oblongata