The State University of New Jersey. They say the exercise-caffeine combo can deflect some of the damaging effects of the sun's rays. BAD HABIT: You train hard on easy days This is the most common training mistake of all. You feel good on a scheduled easy
the pace of your runs is essential to improving, it's key to have the correct variation. "You need to make your recovery runs really easy and your hard runs really hard," explains Chris Frapwell, coach to GB Olympic marathon hopeful Dan Robinson. "Easy runs
