I don't get it...

Dont use the scale as your goal; look for non scale victories, and keep at it! I think sometimes after a hard workout, i find myself excited for a weight loss the next morning, and have found it comes a few days later!

If you worked out harder than usual yesterday your muscles are likely retaining extra water to heal themselves. This is perfectly normal. Our weight fluctuates a lot on a day to day basis due to water retention. You obviously didn't eat the 10,000 calories you would have needed to gain 3 pounds of fat yesterday, so it's just water.

You can't take day to day weight changes to heart. If you're going to let them bother you, you might consider only weighing yourself once per week.

I wouldn't let that upset you. You worked out all day and probably gained muscle but also, you said you had a big meal at dinner. So that might have something to do with it. Weight fluctuates daily anyway. I usually weigh less after I miss a workout. Every Body is different. Stay motivated and keep up the good work.

Think of weight loss like watching your 401k plan. Would you liquidate it because of a bad change over 2 days? I look at week over week trends. And if i get in to a plateau... i just look at my 180 day graph and remind myself its working... dont change a thing... results take time.

RELAX! Don't let it get you down! Women retain water at different times each month. Heck, my weight can get sporadic if I measure every day! Try a "once a week weigh" to help you concentrate on your fitness more and your weight less. You are doing great!

My weight has fluctuated up to 8 pounds in one day before...it is irritating but it happens to everyone. It does not mean that you've gained 3 pounds of fat overnight.

Sometimes when you work out really hard it causes your muscles to retain water weight. It is completely NORMAL for your weight to fluctuate. Don't let it get you down. Unless you consumed 10500 calories OVER your allowance it is impossible for you to have gained a real 3 pounds. You can do this! Look how far you've come already! You got this!

^^---This is my thoughts exactly. Don't weigh in more than once a week, you will create unneeded stress.

Very common! The scales are not a friend to those trying to lose weight. I weigh in weekly at work and do not have scales at home. Take the battery out and hide the scales. What you are doing really has very little to do with what those numbers say anyway. Water fluctuates daily, even throughout the day, and can have a huge impact on the scale. Focus on you and not a number

My experience is, I work out the hardest Mon-Wed, the rest of the week I'm kind of laxed about exercising other then some resistance training, stretching, and ab work. My official weigh in day is Monday morning, but I still weight myself everyday. I noticed Tues, Wed, and Thurs morning when I weight myself the scale goes up, but the rest of the week as long as I stay on track food wise the scale then goes down.

I would watch your exercise calories, MFP gives you more credit then you earned. If your using an HRM than disregard the previous sentence

See that red # under your sodium column on yesterday's food diary? That has a lot to do with it, especially if you really only drank 4 cups of water. On days when you're active and/or have high sodium foods, you really need to push the water. If you don't like plain water, add some lemon juice or one of those low calorie/calorie free drink mixes like Crystal Light or Lipton green tea.

Also wanted to re-iterate that it's not muscle you're gaining already (that takes a lot of time, especially for us women) but when you have a good workout, especially when you're sore, your muscles are retaiing water as part of their natural healing process.

Here's the thing - we tend to think that when we make changes, we'll see immediate results but that's just not how our bodies work. For example, I went WAY over my calories and sodium on Sunday due to a special dinner out with hubs. The next day, my weight hadn't changed a bit but by this morning, I was up 2 pounds. I'm also about to start my monthly so that's got me retaining water on top of the bad day. It's ok though becuase I know what's going on and I know what needs to be done - keep working out, keep drinking plenty of water and tea and make good eating choices the rest of the week.

This is not a race, it's a lifelong journey.

You can't weight yourself daily your weight naturally fluctuates. Only weight yourself once a week. Also body weight is just one part of the equation there will be muscle gain, body fat % loss & water retention (etc.) Just keep plugging away your getting there. Slow & steady wins the race!

Sometimes when you work out really hard it causes your muscles to retain water weight. It is completely NORMAL for your weight to fluctuate. Don't let it get you down. Unless you consumed 10500 calories OVER your allowance it is impossible for you to have gained a real 3 pounds. You can do this! Look how far you've come already! You got this!

^^^ This exactly! Don't stress over a few pounds. Unless you ate 3500 calories over for each of those pounds you did not gain that weight in fat. It is just water retention. If you can not handle fluctuations of the scale do NOT weigh yourself every day. Do it once a week or bi-weekly.

If you weigh yourself everyday don't live by the results. Take a few other suggestions on here and weigh yourself less frequently. Some weeks you could even gain weight but if you keep at it I bet you will lose something every month. Also weigh yourself at the same time of day if you don't already.

I weighed myself on Sunday I was 249, up from where I was a few days before that I was 246.2. Monday I was 248.8, Tuesday was 246.8 and today I was 246.4. Swings are going to happen but I am not letting this get to me.

Everyone has already said it all... it's normal, don't sweat it. I try really hard to only weigh myself on Sunday mornings but I'm thinking of changing that to once every 2 weeks.

The ultimate disappointment in weigh-ins - I had an 8 lb baby and weighed myself 3 days later. I was down 4 lbs. And trust me, I didn't eat back 4 lbs of hospital food! So how did that happen?!?!