How much excersise do you need to lose weight?

Maybe it's about changing the type of exercise. Your muscles may be complacent, or up the intensity. You could try upping the calories you eat by 100 or so ... and see it that helps.

Why didn't you log the last two days? Are you crushing excess bad foods on the weekends? That would probably explain it.

do a walk at lunch at work then do a workout in the evening, see if that kicks the mucles up to start burning again.

I would suggest every week you walk 30 minutes daily with 3 days of some lite strength training.
Good Luck!

I heard on the biggest loser one time to do your exact same workout but in reverse order every day. This confuses the muscles and shocks them, which leads to faster results

How much you need to burn to lose weight varies by many factors, but basically you need to burn more than you consume. If you don't have more time to dedicate to exercise, try to up the intensity. If you can add more, try doing both. Exercise a little more, and increase the intensity. Even adding 10-15 min more of exercise can make a big difference.

From everything I've read, and what I've experienced, diet has more to do with success than exercise. Really check what you're eating (calories, types of calories, etc). But I would also agree that 30 minutes a day of excercise might not be enough to really lose a lot of weight - unless those 30 minutes are really, really intense.

The basic equation is calories in vs calories out. Exercise increases the amount of calories you can take in, but if you think about it, you can lose weight without exercise at all by controlling food intake. Combining exercise with diet is by far the best approach, but make sure you don't over do it when you eat back your calories. E.g., I know that I am blessed (sarcasm) with a slow BMR (basal metabolic rate), and if I eat back all my exercise calories, I'll either stagnate or even gain weight.

First, are you sure you know how many calories you need to eat to maintain? If you haven't done so, find out what your TDEE (total daily energy expenditure). Here's a link: http://www.fitnessfrog.com/calculators/tdee-calculator.html

In general, if you want to lose 1 pound a week, you need a calorie deficit of 500/day (7 x 500 = 3500 calories = 1 pound of fat). If your goal is 2 pounds a week, you need to eat below your TDEE by 1000 calories a day. So, whatever your TDEE says you need, knock off 500 or 1000 a day, and you should lose weight. Then, add back in your exercise calories, and you are supposed to eat back all those calories - but like I said, I know that I can't do that. So, track it and tweak as necessary.

Also, track your calories burned through exercise with a heart rate monitor - the estimates out there aren't reliable. And always convert gross calories to net calories before you add them back to your daily intake. Otherwise, you'll be double dipping and sabotaging yourself.

Best of luck!

You just gotta keep on keepin' on..........

Definitely get back to the logging, you may be eating more than you think, if that still doesn't help, then maybe you need to actually go so far as to measure...Jillian michaels has a few podcasts where she talks about "plateaus" and if I remember correctly she goes through how to evaluate where you are lacking and helps figure out what it is you need to do to get back on track