Calorie deficit for bigger guys

Water weight due to sodium/new workout routines/stress/etc. could be masking some of your results.

I assume when you say 'eat back 2600' you mean you're eating 2600 that day that Fitbit shows you burned a total of 3600. Not that you're eating 2600 in addition to what MFP told you to eat.

Other than that, how accurate are you with your logging? Are you using a food scale, or estimating portions? With your stats you can probably afford to estimate - but if over time you don't see the results you expect, then improving accuracy can be one solution.

Also, sometimes it takes more time for the body to adjust to the changes. Each and every person is different.

I would be very wary about the eating back all of the recorded exercise calories. Remember that calories are NOT exact, and typically exercise calories are averages / statistics / made-up based on what we hope are generalities.

I would reduce those "exercise" calories by half, and see how much of a deficit you are in.

Also, just give it some more time.

Personally I run on 1500 mg of sodium, as I find the salt creates a MASSIVE water retention level in me, and the recommend (western civilization) of 2400 mg per day is EXCESSIVE!!!!!

Good luck, holler!

*** January 1st 2015 = 310 lbs. July 19th 2016 = 155 lbs.

Yo big bro! I'm at 298lbs 6'4 30years old male. from the research I've done basically 3.2lbs (Average) is the most you can get off in a week and be in the range of healthy. It's just a marathon i'll lose between 1-3lbs a week. I drink about 1-1.5 gallons of water a day (roughly 8lbs of water) Also not trying to be lewd but consider what you wear on the scale my clothes weigh between 8-12lbs so much fabric! To get an accurate 'weight' they suggest weighing yourself 3 times a day and taking the average (morning, mid-day, night) I think the most I've EVER lost in a week is 7lbs, this was after having an 'up week' of gaining 2.4lbs (most likely water weight as others have pointed out to you) again though, there will be ups and downs, you just gotta keep the faith and keep the trend going in the right direction. Most my weekly recordings are like -0.1lbs, -2.0lbs, -4lbs, +0.1lbs, -2.0, +2.0lbs... as a rough sampling your results may vary. My little brother big guy like us just way better at losing weight, always has been, but right now he's bigger than me pushing 6'5 400lbs+. He started off weighing less than what we weigh now, but it's been I've kept with it over the last 3 years that has helped me lose weight (I've put some back on, and lost it again) The heaviest I was ever at that I actually recorded was 399lbs. Stop thinking short term keep on logging in your workouts, and weight. EVERYTHING you do today you'll see the results for in 3-4 months IF you keep with it. Took us 30 years to put on the weight its not going to shred off in a couple weeks. Think a couple of years at least 2-3. This has to be a lifestyle commitment you make for yourself, don't believe the hype or some gimmick. I'm just talking real world, and my experiences. I try to hit between 1800-2500 calories eaten a day, and TRY to get 30min-120mins of light cardio like walking, swimming, or elliptical machine. I never eat back any calories, instead focus on eating good calories and staying in my range of 1800-2500. I do my best to stay away from processed sugars, and I add a splash of apple cider vinegar to my OJ. I've reduced my weight lifting days to just 1 day a week. Congrats on the 1lbs lost man! keep up the good work remember 52 weeks in a year those 1lbs add up fast if you keep faith in yourself and your positive actions! Good luck.

Just a little thing that may help.
In your 2nd post you said you went off bar codes and weighed everything else.
Weigh the food you are using the bar codes for too. Very few prepackaged items are spot on with the weight and though this can be only a few grams per serving over a day it could add up to a couple of hundred calories.

Don't forget to add liquids, especially oils and dressings.

Cheers, h.