I was really determined to have a lovely run in the sunshine tonight but it just was not to be. I found what I thought would be a nice new route through a park and could mix it up with good paths I know so off I went....but I hit a brick wall almost immediately and stopped after 5 mins. Last week's runs were really hard and I had to stop twice briefly in my last run on Friday so I thought I would be ok tonight after 4 clear days off. I started 3 more times tonight and just could not for the life of me carry on after a few minutes. I realised its my calves, they are cramping up. My head is shouting GO, my breathing is absolutely fine, lungs are ok, legs are like LEAD. Please, please, can someone tell me whats going on? I love running, and its doing me a power of good and I dont want to stop but the last 4 runs now have been really tough and I feel like having a good cry!