Calfs and chins lock up when running

ErikWennerberg

Hi guys.
I been running about 20 times this last month and I been using intervals, walking - running and so on and Im trying to up my running but all the sudden my calfs gets tired and locks up, also my chins feel like their cramping. I didnt know you had muscles by the chins but they cramp up and they hurt so much I cant even walk. I havent had this problem before, just the last 2-3 times. Its keeping me from running as far as I want. And its hard to up my game if I cant move.

So if anyone out there knows why they would do this I would appreciate some advice.

As usual I always thank you in advance