More on weight

Response to "how much should I eat?" on RW forum.
I used to believe I could eat almost carte blanche if I trained over 50 mpw. Over a couple of years, I began to race at increasingly heavy weights(from 158 to 167) and saw my marathon times cease to improve in spite of better 5-10K times and the same mileage. Now, I eat a lot, but not quite as generously as before and I'm upping the mileage, so my weight is back down.

My point is that it's not only an individual thing, but that it can change from year to year as your metabolic system changes.

Here is my weight and pre-marathon race for each marathon:
1. 158, 45:32 10K, 3:58 marathon
2. 158, 39:31 10K, 3:35
3. 157, 38:02 10K, 3:13
4. 162, 37:58 10K, 3:24
5. 164, 1:28 HM, 3:12
6. 164, 18:32 5K 3:31
7. 166, 3:28
Now my weight's around 157. The first two I was training at low mileage. The last two, were both affected by injuries or temperature on race day. But the point is that I was training between 45-55 mpw for all of these marathons, yet my weight rose. I think it was mostly a matter of eating habits. We'll see.