What is this Body Bugg thing?

I'm not exactly sure how to describe all of the science behind how it works, I know there's some type of motion measurement, heat dissipation & skin temperature sensor thingies, but if you want to know how it works see the link below.

http://www.bodybugg.com/science_behind_bodybugg.php

All I know is that I wear it on my arm, plug it into the computer a couple of times per day to upload my stats to the BB website & enter my food eaten for the day. I try to keep my calories burned about 750 more than my calories eaten & then I usually will lose about a pound per week. I'm pretty good at weighing my food that I make at home, but it's hard to estimate things when we go out to eat. I try to estimate high, but with a lot of restaurants not putting their nutritional information online it's hard to guesstimate how many calories are in this restaurants version over another that does post their information.

Which is a big part of why I would rather eat in than out lately. It's kind of funny because I'm starting to think of a lot of things by the amount of calories in them. For example, I almost never have a cocktail with dinner anymore. I think about it this way:  a couple of different shots of flavored rums/vodkas at 80 or so calories each, splash of fruit juice or soda will give me 300 or more calories for a drink. Heck, a serving of my light ice cream only has about 120 calories. That's a double dose of desert for one drink? Give me the ice cream any day!

I've discovered so many "diet" or lower calorie foods that actually taste good & I will share my favorites in other posts, but back to my Bugg.

I believe that for the calories burned it's pretty accurate, so the downfall is all on the person imputing their information correctly. I obviously must suck at this. According to the information I've entered, I should have lost about 20 pounds at this point, but I've only lost about 13-14. I know from reading that people tend to underestimate their portion size, but I'm weighing most of my foods, so how do I have such a big discrepancy?

When I purchased my Bugg it came with a six month subscription to their web service, which expires in the middle of June. I'm planning to renew for at least another six months. I'm pretty sure it will take me that long to get to where I want to be. It would be cheaper if I were to renew for a year, but I really would like to push to get this weight off quicker. So this means reapplying myself & working a little harder.

My current goal is to be 170 by the 4th of July & it's looking a little tight at what I'm currently losing, so I'm going to step it up this next month and a half. I'm looking forward to recommitting myself to this journey & write about it in this blog.