I think I am going crazy and I need to ask if this happens to anyone else. I am 56 years old and this is my second season of riding a road bike. I workout at the gym every day. Cardio + resistance training. I eat around 1500 calories a day - 50-60% carbs, 30% Protein - 20% fat. During the week, I do cardio at 65% of my maximum heart rate, which should be fat burning zone. On the weekends, I ride on the road and spend about 30% of every ride in a high heart rate - 90% of max.

That's the background. Here's the problem - every weekend, I go into it weighing 2-3 pounds less than I come out of it. I don't over-eat or eat "bad" foods on the weekend. The main difference is that I ride my bike 50-60 miles each day of the weekend and workout really hard. I may go into the weekend weighing 140 pounds and come out of it weighing as much as 144 pounds!! Then I go to the gym all week long and slowly it comes back down... just in time for the weekend and then it goes back up!!

My husband says it is water gain, but surely with the amount of exercise that I do and the sensible way that I eat, I should be losing weight, not gaining it!!!

The irony of it is that if I stopped working out and stopped riding my bike, I would lose weight. Before I started riding, I lost 30 pounds. As soon as I started exercising, I became unable to lose anymore weight.

And no, I am not losing inches either! So, it's not that I'm gaining muscle and losing fat.

Holy cow... I am losing my sanity. I've been one year at the same weight even though I am more fit and eating better than I ever have in my life.

Any ideas?