For the longest time, I couldn't run more than a couple of miles a day. I was always told that I had poor stamina. I trained for a year, and recently ran my fir

For the longest time, I couldn't run more than a couple of miles a day. I was always told that I had poor stamina. I trained for a year, and recently ran my first marathon and I'm now addicted. I can completely relate to what you say above - its so easy to just go on and on (because you seem to be able to) completely ignoring your body. I've had 14 hour days at work at the end of which I'm very tired, and yet would easily run 8 to 10 miles and feel extremely refreshed at the end of it, that I would go back to work. Adrenaline kicks in as a result of high-intensity workouts, and it then becomes hard to tell your body to slow down and rest. The key is to know your body's limits and feed and rest it regularly.