I've been worried about this run for a while, 20 minutes straight up and down the hilly area I live in felt hard and sure enough the hard part was the mental side of things - I managed to convince myself last night that I could do it, but this morning had lost my confidence.
1 minute in to the run and I was struggling, 2 minutes in I knew I couldn't do it, 5 minutes in, hmm maybe just maybe, 10 minutes in and I started to believe again.
At the 18 minute mark an army couldn't have stopped me.
By the end I was less physically tired than the previous session, bring on week 6!