How To Reduce Weight?

I tend to walk a lot, and also eat healthy...Most times I get to work out at least 3-4 times per week for about 45-2 hours (depending on the day). The 45 minute workouts include kick-boxing, and the 2 hour workouts include kickboxing and running...

I have always been considered fairly active, and a healthy eater...However, only running keeps me from gaining weight.

Even when I work-out 3-5 times a week in other ways and walk a lot/use stairs whenever possible/eat healthy (around 1000-1500 calories per day including less than 1400miligrams of sodium, plenty of potassium and fiber...) I gain about an inch all over my body ever week or so...I end up looking HUGE if I don't run at least 2-5 (2 at a faster pace, and 5 at a slower pace) miles on a regular basis (about 3-5 times per week).

I know that I have a slow matabolism, and that runs in my family...but I don't want my whole life to be exercise...I want to be able to workout for an hour 3-5 days per week and maintain.....Instead, I end up gaining weight even with a constant healthy eating style and workouts that don't involve running.

I have seen doctors about this problem, thinking that I had some sort of thyroid problem...I was refered to an endroconologist and a nutritionist......They gave me diet plans, and I eventually ended up faxing a nutritionist everything that I ate and the workouts that I did......

I gained 15 pounds, and when I asked the nutritionist why I was gaining weight she told me "There is no logical explination why you are gaining weight".....

I feel into major depression and had to work myself out of a bulimic (yes, I know exactly what I was doing to myself-more than anyone because I have studied bulimia and know how ineffective it is...) period, feeling hopeless and fat.

I got personal trainers to help me loose the weight that I gained, but have since never fully recovered in terms of my weight...

I just want to be able to loose weight and maintain it.......but whenever I loose weight by running 3-5 miles per day (at least 4 times a week if not 5) and working out 45 minutes per day (at least 3 times a week if not 5), and then reduce my running to maintain my weightloss, and keep up my healthy eating (even adjusting calorie intake slightly at times when I know I cannot work it off in time-due to studies or other)........I gain weight......a lot of weight......quickly......and it is very visible on me (not just saying that because I see it, but other people mention it as well in subtle ways......).

It seems like stress would contribute to my rapid weight gain, but I have had my cortizol level tested and it is normal...

It seems like I may not be eating as healthy as I think I am...but I have spoken to many experts on healthy eating (including those in the medical field) and they have all praised what discipline I have with my healthy eating.......

It seems like I am reducing my exercise when my body has gotten use to it, and needs an amph rather than decrease to loose more weight, and at least needs to be kept constant in order to maintain..........When I work out as much as I do when running.....I loose weight...What if I want to maintain after I have lost the weight?!?! Even when I drop the running down to 3 miles 2-3 days per week (while still working out 45 minutes-1 hour every day doing kickboxing/walking/standing and lifting things for at least 8 hours-job).....I gain weight.

I have just gotten back from vacation, and measured my waste..........I was 30 for about the first week...

I still went to my job that requires lifting/bending/walking/standing/pushing/etc for eight hours a day, and walked everywhere that I went.....It has been about 2 weeks and I already have a 33 inch waste....

I have gone on vacations before when it has taken me a few weeks to get back into a running routine, and even with 4-5 days of 1 hour training sessions, I gained weight after 2 weeks or less.....

I just want to be able to stay fit and maintain after I have lost weight without making exercise the center of my life and without sacrificing valuable study time in order to get ALL that I need to do to keep from gaining weight out of the way....every......single...day.

Why do people keep telling me that if I workout about an hour 5 days per week or more that I will loose weight and do 30 minutes of cardio 3 days per week and I will maintain so long as I eat healthy if I have to do the 5 day a week routine just to maintain!?!?!

I feel really cheated and large......and no one has been able to help me except by making me run land loose the weight again...starting the cycle all over again...