[burnin_vernon]

I'm trying to lose 15-20 lbs and figure that will take about 2 months if I stick to it. I don't need to gain a lot of muscle but I don't want to lose any either.

I'm using fitday.com to log my food and activities, and I'm wondering how much I should be eating.

I walk about 3 hours each day at work, carrying 20-40lbs up a lot of hills and stairs. I then biked to and from the gym, which is only about 8km total. I did about 20 minutes of weights and 2 miles on the treadmill in 20 minutes. Fitday says I burned 1700 calories without doing any of those activities and an another 2000 with them.

So far I've eaten 2400 calories or so and that was a lot for me. That leaves me with a defecit of around 1300 calories.

Do I really have to eat more? Is fitday accurate with it's caloric expenditure ratings? Would a person burn 1700 calories just sitting around for 13 hours or 400 in 6 hours of sleep? Does my job really count as normal calories burned when I am so used to it and it's not overly difficult to me anymore?

I may be too anal about all this, but I like tracking stats and the precision of it seems as though it should leave less room for error/failure.