Basically he was referring to lactic acid buildup.
So when you run, you get lactic acid in your calf muscles. Well, usually when you are done, it works it’s way out and up to your kidneys and then ‘goes away’. I’m trying to keep it very simple and this was all explained to me whilst I was being worked on, so it’s a little fuzzy cause moments of clarity were sprinkled with pain. Anyhow, so that’s ‘normal’. But, for instance if you start increasing your workouts, or making them harder (for instance the mud run training and even just my tuesday workouts that involve running faster than usual) then sometimes the lactic acid in your calf muscles doesn’t move along and it just stays there. Part of this is also due to my shin muscle (inside part of the shin) not being as strong as it needs to be. So the lactic acid doesn’t go away and the next time you work out, you get more lactic acid and IT doesn’t move along and it all starts to build up in the center of the calf muscle, which apparently is like a washboard on the fron shin muscle and causes inflammation there = pain. So what you have to do is massage and loosen up the lactic acid from the calves. It leaves, and then the inflammation goes down and as long as you keep the lactic acid out of the calf area for a few days, you’re good to go. Then you have to focus on strengthening that front shin muscle – by doing heel drop calf raises and elevating the calves, and icing them after tough workouts.
That may not be 100% what he said, but it’s the best I could do remembering. Anyways, it made sense to me and my legs do feel better so far. =) Yay.
Oh, and don’t pay attention to the dots on the picture. I got it from somewhere else.