Imagine an athlete several days after a concussion. She is still feeling a little out of it, but her friends and teammates are really starting to pressure them to return to play since playoffs start next week.

Are you asking what she should do? If you're asking that i suggest whoever it is that got hurt to decide for herself. If the concussion is very bad and she have seen a doctor and they told you to sit out or something else then you should do as told. But if its mild, then she can know her limits and what she wants to do.