Extraverts get energized by external excitement and get bored or listless in the absence of it.
Introverts get energized by internal excitement, and get worn out when it gets blocked out for prolonged periods via attention-sapping external stimulation.
So, extroverts get energized by interacting with a bunch of people, i.e., having a meeting, while introverts get worn out by "attention-sapping external stimulation". Energized good, worn out bad.
A fun article by Alan Jacobs. Check out the paper he cites, if anyone finds an non-paywalled version, I'll edit in the link here. HT for the link to Michael Bloom.
I really do need to find more written by this author. But while I certainly do very much share this sentiment I have a hard time figuring out how common it is. After all people don't look good saying they "don't like meeting new people".