I graduated about a year ago but can still find a full 30 minutes of running quite challenging especially when it is warm/hot. This morning, I stopped for a couple of minutes and sat on a bench in our delightful town park. It seemed to make all the difference as I then ran for the next 16 minutes without a break and even began to enjoy it.
I am sure I have read somewhere the rationale for the emphasis on not stopping but I need a reminder of why this is so important.