135 pounds on insanity and crossfit , scale no moving!

Sometimes I burn 1300 cal and most days at least 500... I eat between 1500-1200 cal day.
So I don't know what's going on? Maybe my eating at night habits ?

Is the 1500-1200 a day that you're eating gross (i.e. you eat nothing more than that)? If so, that's likely the issue.

At the figures you've given, at a minimum you're burning 500 in exercise and eating a maximum of 1500, which means 1000 net calories which is likely to be at or around your BMR - or the amount of calories your body needs simply to keep basic functions going. Presumably (hopefully!) you don't have many days where you burn 1,300 and eat 1,200 because that leaves you with a daily calorie intake of -100 calories. If you did that day after day you'd end up very ill.

In short, if you are only giving your body enough fuel to simply survive, then your body is going to be extracting every ounce of energy from your food it can and temporarily lowering your metabolism by up to 30% because it has to get more efficient to fuel the extra activity expected of it on top of just keeping your organs going. Keep doing that and you will lose weight, but in a very slow and painful way that'll probably leave you feeling like shyte. There'll also be a big danger that when you loosen up and either lower exercise or up calories, for a time your body is going to hang on to every bit of energy and you'll see a weight gain.

What you need to do is either a) set MFP to match your activity level (which sounds high!) so that it adjusts your daily intake or b) input your exercise into MFP so that your calorie goal goes up for that day and you eat some of them back (calorie burned estimates are just that...estimates...so they may be less or more than you're actually burning so you'd need to experiment to see how many you can eat back and maintain a loss)

Great reply! Just tricky convincing yourself to eat more to lose more!

Hi I'm no medical expert but do disagree with ms pudding about the metabolism slowing down especially if you are exercising.. When I started off on mfp I was eating the same as you around 1200-1500 a day but was netting down to 800-900 a day. I did this initially for about 8 weeks but the key was being regimental about what I was eating and accurately weighing foods etc. if you end up snacking etc and not logging it doesn't help you so make sure you're not doing that.

I initially lost around 15kg in 6-8 weeks but in your case maybe you body is still adjusting to your new regime so don't give up and keep going. You yourself should be able to judge if you're eating far too little food from your own energy levels I personally didn't feel I was under eating.

And you were eating at the level and simultaneously doing two hardcore exercise programmes? Because, Insanity or Cross-fit alone are pretty full on and require decent eating and maximum rest. Doing them combined is for the truly athletic. Unless you're eating enough, sleeping enough and getting adequate rest days - this will be unsustainable. You'll end up injured, tired, irritable. Your stress levels will shoot up and your workouts will end up half-*kitten*. If you're going to do more half-arsed workouts, why not just do fewer, higher quality workouts? You'll get twice the results in half the time.

But you keep giving stupid advice. I just hope no one listens to it!