So after my HIIT training on Thursday My calves are very sore. Now they are not sore in the typical spot like they would be from doing calf raises, they are sore just below the calf in a muscle that probably doesn't get worked out that much. I have always included calf exercises in my normal workouts but the soreness that I experienced from that exercise was only minimal compared to how they feel now. I did 6 sets of pull-ups, 6 sets of push-ups (alternating pushup style, clapping, elevated), 5 sets of jump squats, and 5 sets of planks (side and straight). Was at the gym for 32 min.