I ran the first 6 miles with Sasha and Ted in 43:04. It is the fastest we have finished 6 miles since I ran the marathon. Afterwards Sasha and I ran 4 more miles. During the last mile we picked the pace up and ran a 5:59 last mile. I stopped in the middle of this mile to give my wife Kimia a kiss as she was walking down the Provo river trail. The goal of running a faster last mile is to see if I can slowly trail my body to run using a higher percentage of energy from fats at fast paces, so we pick up the pace just enough that it starts to feel uncomfortable, where if we picked up the pace any more we would actually feel better. The theory is that our body is still trying to use fats to power the muscles as it has been the entire run, so speeding up just a little will train the body to use fats at faster speeds, thus limiting the blow-up in a marathon. However, if we speed up too fast, our body will naturally switch over to using muscle glycogen as the primary source of energy. Total time for 10 miles 1:13:36. |