Wait, are you kidding me?

Try weighing yourself on a different scale... you may need a new one. (Seriously!) And what time are you weighing yourself? The best time is first thing in the morning before you eat anything so its accurate each time.

Strange question - but on you about to start your cycle? If it's about that time for you, or if you're on it, that could be playing a huge factor in the gain. Keep doing what you're doing, because if your clothes are fitting looser, then you're doing something right, just keep doing what you're doing. Weigh yourself in another week, it may go down quite a bit. That's what I find happens with me, anyways.

holiday feasting can add lots of sodium to your diet too, causing extra water retention.

Part of it could be muscle. Muscle is more compact than fat so your body composition could be changing (muscle does not weigh more than fat- a pound of muscle weighs the same as a pound of fat- a pound). Could be water retention- are you drinking enough water and watching your sodium intake? Could be other types of waste- are you getting enough fiber? Have you tried a colon cleanse? The scale can be a very tricky thing. It could be something medical too. If you still find that you are eating well, not cheating or forgetting to log things, and you are really hitting your workouts and still having this weight gain problem for another month or so you may need to go see a medical professional to make sure something else is not going on inside of you.

Weigh yourself in one week and i bet it will go back down a little, as long as you get back on track with the way you were eating before the holidays.

No it's not muscle gain, no you may not have a thyroid problem, I wouldn't recommend a colon cleanse (unless you were on a wrestling team and needed to get rid of 2lbs of poop). If you are looking to lose weight, don't do quick fixes-you know this stuff

I came back from vacation and the scale had increased 5 lbs. I agree it was probably from salt intake and I wasn't drinking enough water daily. Within two weeks of eating right, but not back in my exercise routine, the scale was back down 5 lbs.

Then came thanksgiving.. oh boy! Get back on track.. it'll come back off. Your body isn't going to let all that hard work go to waste, it will fight off the weight gain, whether it be water, salt, fat, etc.

From what I have been told in the past, your weight can vary up to 7 LBS a day. With that said, it is best to weigh yourself at the same time every day. Even if you weigh yourself at 3pm when all you have done is eat and drink all day...it will still show a loss. I like weighing myself 1st thing in the morning.
TAKE MEASUREMENTS. from neck down to calf!
Lastly someone already wrote...depending on where you are in your cycle can play ahuge factor. Mine the week before, I don't botherr weighing in, cause I am always heaviest.

Stay Possitive.

Weigh your self your 1st day......I bet you will have a loss. LOL.
My other problem is during...i retain water so I watch salt intake.

Best of luck to you!!!! Don't fret, it will all be okay, just keep tracking.

Cheers,

Get a new scale!

So sorry to hear you are having problems, especially as you have been the 5K Queen lately. Lots of good suggestions been replied for you. I definitely would agree with weighing first thing in the morning....or at least at the same time each day. Also, if you have been doing so much training lately, have you factored that into your calorie needs? You may need to increase your calories to make sure you are getting enough, or your body will go into starvation mode & will hold onto fat.

Above all, hang in there. You are doing so great with your fitness and really enjoying your running so hang onto that good buzz from the workouts and looks instead at the food, there must be something going wrong there.