This weekend I had a bad calf cramp in the last part of a combat stick sparring match (Calf cramped right as I pushed off for a strike, and then really locked up). Yesterday and today sore when walking at the push off of the stride.
Gym today, and while the calf felt better, didn't want to risk either squats or the hip sled. So, I opted for leg extensions and curls. The extensions were fine, but when I was doing curls, I could feel the calf wanting to tense. I was using the curl machine where you are in a seated position, rather than one where you lay on your stomach.
However, the curl should be a calf neutral exercise. I tried varying my foot position, concentrating on solely using the hamstrings, but unless I had the weight low enough where it was just an exercise in form, the calf rebelled.
What form break am I missing that would cause the calf to be active in an exercise where (theoretically) it should be completely neutral?