For the curious ones, from Psychology Today:

“A larger amygdala is primarily associated with increased anxiety, heightened emotional reactivity, and stress-related disorders, often acting as a hyper-active “threat detector” Symptoms frequently include persistent fearfulness, depression, irritability, and hypervigilance, as the brain over-processes neutral stimuli as threats.”

Whoever made the original meme is an absolute moron.

https://www.psychologytoday.com/us/blog/the-athletes-way/201311/the-size-and-connectivity-the-amygdala-predicts-anxiety