Morning. Could I ask some advise of the experts please! I graduated in July and have been completing 5k fairly consistently (Still trying to get there in 30 mins!) However during the last couple of weeks I have been getting aches in my calves as I am running to the point his morning I had to pull up. The first 3.5k was fine but then just felt like I couldn't continue. I have tried the roller cylinder but don't seem to have the upper body strength to push myself along with it. Any suggestions?