Week 2 Build Core Muscle Endurance

Now you have been training consistently for several days. It takes 21 days to create a habit; you are about a third of the way there. Follow your training schedule as closely as possible. Don't get distracted, and don't get carried away. It is the small things, day after day, that make the biggest difference. Training too much could put you at risk for injury, and training too little will make it hard for you to finish your marathon.