Is it possible to loose 20 pounds?

With 20 pounds to lose a healthy (and realistic) goal should be to lose 1/2 a pound a week. That would be approximately 40 weeks.

I think that would be pretty hard to lose 20lbs - But I would say getting to 140lbs should be your lowest not 135lbs!

Your at a good height & weight already.

Im 5 ft 9 and weigh around 148lbs - I realistically want to be around 140lbs - BUT it isn't easy.

If you don't have a lot to lose its pretty hard.

Your just going to have to take it really slow & see if your body wants to get down that low.... Sometimes you can get down, but cant maintain it.

Could you maintain your lifestyle at 135lbs??? I know I couldn't

Hey, I like you and I feel like I can relate to you

I think that 135 is a perfectly healthy weight (When I used to eat like poop and moderately exercise I weighed 125-126 and I'm 5'11)
So far I've logged onto my fitness pal for 17 and in those seventeen days I've lost about 4 pounds. So you could set you a goal of 1 pound per week and maybe you'll lose more!

A couple years ago I was 138 (before pregnancy). I was def thin, but no anorexic looking. Right now my thighs and arms are thicker than I want them to be. I guess a better goal weight would be 140 pounds. I'm just worried my body is not going to let me loose it.

It sounds like you might benefit from looking at this in terms of body composition goals instead of just weight loss goals. I'm guessing that the number on the scale isn't the only thing you care about? You might consider instead setting fitness goals or a goal based on body fat percentage instead of just the number on the scale.

I'm 5'9" and weigh 138-140. I'm happy with my appearance. I was lower for a while (down around 130 -- happened when I was ill) and really looked too skinny -- flat butt, boobs rattling around in my bra, jeans sagging badly, no curves left.

So, while I'm sure it could be done, I'm not sure you'll like the results.

I'm 5'10" and got down to 142. I looked in the mirror and still saw belly issues, not the athletic body My goal was. At that point I chose to build more muscle and put the scale away. 5 months later I am 151 and still fit in my size 5 jeans, and a few days ago I looked, and could see the beginning of the athletic body I have been wanting appear in the mirror.

I am 5'10", 154 pound female.

Going by BMI you should be 130 - 170, so you're already right in the middle.
http://www.shapeup.org/bmi/bmi6.pdf

I want to get down to around 135 (the lowest healthy weight i can go).

Why?

Right now my thighs and arms are thicker than I want them to be

Have you considered doing weightlifting (even body weight workouts) to tone & slim, instead of focussing on weight?
Check with your doctor to see if you can, and if losing weight at all (let alone to such a low level) is a good idea for you.

How long do you think it would take to get to that weight?
I can only do moderate exercising because of a heart condition, but will eat very clean.

Because you're already at a healthy weight, it's going to take a long time. If you lose (not loose) 0.5 lb per week it would be big. Even every 2 weeks would be pretty fast.

And what exactly do you mean by the buzz word "clean"?
It has so many different meanings, as many as the people who use it.
Eating more whole foods and fewer processed foods is always a good idea.
Removing any macronutrient or food group from your diet is not.


http://www.myfitnesspal.com/topics/show/819925-the-basics-don-t-complicate-it

http://www.myfitnesspal.com/topics/show/1080242-a-guide-to-get-you-started-on-your-path-to-sexypants

http://www.myfitnesspal.com/topics/show/872212-you-re-probably-eating-more-than-you-think

http://www.myfitnesspal.com/topics/show/833026-important-posts-to-read

Having a diet relatively high in protein helps lose weight while maintaining lean mass.
http://www.myfitnesspal.com/blog/MKEgal/view/2014-08-09-high-protein-diet-685553


O.M.G.

I think that 135 is a perfectly healthy weight (When I used to eat like poop and moderately exercise I weighed 125-126 and I'm 5'11)
So far I've logged onto my fitness pal for 17 and in those seventeen days I've lost about 4 pounds. So you could set you a goal of 1 pound per week and maybe you'll lose more!

So you're 18, used to be severely underweight & think that being anorexic is just ducky?
(A healthy weight for your height is 135 - 175.)
And you don't pay attention to science.
When someone is at a healthy weight, it's going to be hard to lose weight. It's going to be very slow.
Probably what you've lost is water. Unless you've started out grossly obese (like in the range of 200 lb overweight) you can't lose 4 lb (your ticker says 7) so fast and be healthy about it, losing the right type/amount of tissue.

when you start to build muscle you will realize its not about the number on the scale. muscle burns fat remember that and food is fuel to burn calories. so be sure your eating enough, drink your water and do cardio and strength training but focus on how healthy you feel last year I was size 4 140 lbs this year im still size 4 150 lbs