Hi Sir.
Muscles twitch when they involuntary contract. There is usually nothing to worry about if there is no pain or discomfort or any other symptom associated with it.
Next Steps
A few lifestyle choices like too much stress, caffeine, excessive exercise and less of fluids might lead to it
Health Tips
Please check if any of the above mentioned reasons could be causing it. Nothing to worry about. Take care. Text back if any further help needed. Thank you