I used to run 6 miles daily for 15 years (no kidding) on a high carb nonfat diet. Lost no weight because I was burning up glucose in my muscles and filling up on pasta/bagels all day. Ugh. Plus, after my runs I'd be too exhausted to do ANYTHING the rest of the day.

Now I only walk 1 hour a day and lc. Walking burns FAT. I've lost 20 pounds in the past 4 years. I lost the weight and never found it again. And after my morning walk and eggs, I have enough energy to last me all day - so I keep active the rest of the day and continue to burn even more calories than before!

Don't workout too hard!