18 years and counting
I just wanted to make this to help some people who are especially anxious about this. I started twitching right above my elbow at 14 years old, I remember it distinctly. I am 32 now and have twitched consistently and all over for the last 18 years.
It goes through phases where sometimes it's significantly more intense, but I am the strongest I've ever been and to my understanding in good health. The single best thing to manage them has been working on my mental health. I am a therapist, so having awareness around my nervous system states has helped to some extent.
That said, it's just annoying as hell now.