Here is my random assortment of thoughts. Do with it what you wish.
I'm 5'5, 155lbs. I usually feel my best around 135lbs.
I use Livestrong.com to calculate my caloric needs on any given day because my activity level varies RIDICULOUSLY.
Goal: Lose 2lbs/week.
1) I work three days a week as a nurse - usually 14ish hour shifts spent entirely on my feet.
Moderately Active - Calories needed: 1527
2) On one or two of my days off I run errands/clean/etc.
Lightly Active - Calories needed: 1190
3) On one or two of my days off I like to do NOTHING. Literally NOTHING.
Sedentary - Calories needed: 1106
**When I work out, I wear a Polar F6 to calculate calories burned and then add that deficit into my daily caloric needs. ie. Lightly Active Day + Burned 300 calories = Eat 1490 calories.**
My problem is that I've been following this pretty easily (never feel starved) and actually gained a pound this week. What gives??