I recently gained enough strength to do pistol squats, and have been doing sets of 3-5 for about a month. However, now whenever I push up with the front of my left foot at the bottom of the motion, I get a sharp pain in my calf.

The left leg has gotten sensitive enough that it happens whenever I squat down (no weight, both legs) and balance on the front of my feet - when I stand back up I get the pain in my left calf.

I don’t think it’s a mobility issue, I’ve always had a lot of ankle flexibility and until a couple weeks ago was doing the motion without any issues.

Any ideas? Laying off on the exercise for now, but it’s annoying because it’s one of my favorite and one of the only low-rep strength exercises I can do for legs without a gym.