"mystery solved" today at the pool! I tore my calf muscle BECAUSE OF my faulty breaststroke swim!
When I was twisting out the feet just before the kick, I was doing it without twisting the shin and the calf (keeping them straight)!
It was inevitable that I will tear the calf! Idiot..
"better late than never"... 4 months of stupidity solved at last
you must be a donkey before you become a dolphin.