system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do muscles sometimes involuntarily twitch?

I’m laying on my futon and my left quadriceps starts to twitch on it’s own accord. Made me curious as to why.
gpt
Usually that's an electrolyte imbalance (sodium, potassium, magnesium, etc). Your body runs on electricity and those ingredients help transfer that energy by making the blood more/less conductive. So when you have very low amounts of these your legs twitch because they are forced to construct from an intense signal that under good balance would not be a strong enough shock to "wake up" the muscles. That's why momma told you to eat a banana if your legs hurt (potassium).