This week I went back to the gym after a break of over 2 weeks. You've probably guessed that after my weight training session on Monday my muscles were a bit sore. I was back in the gym for another weight training session on Wednesday and whilst I was still sore my session actually improved the muscle ache. This got me thinking...when you don't use muscles, they become less capable of lifting heavy weights. This is true not only for physical muscles but for mental muscles too.