I am 6'4", 253 lbs and my BMR is 3,557.

Since May 10. 2009 I have averaged 1,446 calories per day in the ratio of 24% protein, 37% carbs, and 36% fat, which is no doubt high on the fat side and low on the protein side.

Since that date, I have walked 131 miles and I have biked 603 miles, the bulk of which I have done since July 24th. I have also lifted weights 3 to 4 days per week

No doubt my calories are very low, but I feel fine and my main goal was weight loss, given that I started at 294 pounds. I have lost an average of 2.09 pounds per week, which is probably the outer limit of the recommended weight loss rate. I also take a multi-vitamin daily.

I would say 1,500 to 2,000 calories per day, with a faiirly clean diet, plus your exercise would get you well on your way. Also, be sure to weigh at the same time each day. I do it in the morning when I wake up and right after I go to the bathroom.

Of course the standard disclaimers apply in that you should consult your doctor, etc., and YMMV, etc.

Keep it up. I have no doubt you will see progress.

Glenn