. The quadriceps muscles are essential for lifting your legs off the ground, and for protecting your knees against pounding. Don’t overlook the quads when you do your strength training. Here’s a simple isotonic exercise you can do seated at your desk. Put one ankle

right away. I started running in 1979 and finished my first marathon only a year later. In my first three years of running, I did seven marathons. I never even ran a half-marathon until 1982. Luckily, I didn’t get injured. But if I had concentrated

toward home. Two hours, nothing to it. When I want to increase my training prior to a marathon, I just add another 9/1 segment on the outbound trip. Now the session lasts two hours and 20 minutes, and I hardly notice the difference. Two weeks later, I do

the equivalent of eight large glasses of water every day, and probably twice that in warm weather. It also means taking in about half a pint of fluid every 15-20 minutes of running. For runs of an hour or more, you also need to replenish spent energy stores