Many years ago I was really inspired by Arnolds calf-story. You know, with the cut off trousers and hours and hours of training them.
So on a free saturday, I did about 100 sets of standing calf raises to failure and beyond during the day. Plus extreme stretching. That night they cramped up on me so badly I spent half the night stretching on the stairs.
I literally could not walk for a day or two, and remained sore for two weeks. Even wearing socks hurt.
I don't recall if I measured them before and after.
Please post your own workout-from-hell