strange coincidence, mine also on left side and its just one muscle fiber just above the knee... i cantthink why, i am not calcium deficient, no longer dehydrated, and total exercise in last 2 weeks has consisted of walking and a 1 hour hike uphill in the rain...
the little muscle has been twiching since sunday night or monday am, even during the night when lying in bed and the leg is fully relaxed... maybe there is an alien implant i am unaware of...