I am not sure what you asking, but since Justin doesn't want to go to the graduation party because he know he going to be embarrass from not gradating with the rest of his friends.
Answer:
The most important emotional aspect is that exercising is a very healthy outlet for any anger, sadness etc. that you may be feeling. The most important health benefit of exercising is that It can help with depression and can help prevent or improve many health conditions whether those might be genetic or because of lifestyle choices.
Explanation:
this is only my opinion. this is not what everyone else thinks.