Sun Run training: CrossFit and running

As every good runner knows, endurance and strength training play a great role in improving your running. By only running, we are only working the same muscles every time; however, by adding weight training to our routine, we can work with other muscles not commonly used in running as well as further developing the muscles that we use to run with.
Some benefits of endurance and strength training include improved endurance and an increase in lean muscle, and it can even help you push through diffi