They can constrict or dilate because their walls are muscular.
Don’t be alone. Hang out with friends.
Wear a bubble.
A. Posting an intentionally hurtful or mean comment on someone's social media and being blocked from that account.
B. Posting photos or videos of yourself doing illegal activities (drinking while underage, doing drugs, etc.). Companies and colleges look at your social media to see what you are really like, which could lead to not being accepted into a college or being kicked out of a sports team.
The answer is B / interactions with consistent caregivers
