CommunityBrowse groupsBlogEtiquetteInvite Your friendsSuccess Stories


What if I'm not eating enough calories while working out?

How do I know how much to eat if I don't know how many calories are in some of the foods I eat. I have been really good about eating my breakfast in the morning to get my matabolism going. I'm finding as I work out more that I'm not wanting to eat as much during the day and evening? Some days I will only get maybe a 1000 calories and on top of that I will have done a good 30 minutes on the treadmill in the morning. The next day I may have 1500 and then I may be back to a couple days of 1000. I don't really count my calories because I make alot of things that I have no clue how it would calculate into portions and calories.
I have around 50 lbs to loose. Do I have enough to loose that I don't have to worry about my body burning muscle before it will burn the fat?

I just remember someone was doing weight watchers and not eating all her points and she was not loosing weight. The WW lady to her she needed to eat all her points.
Then I remember on biggest looser how she would say, "you have to eat" if your going to loose weight."

Sat. Jul 29, 5:26pm

Add comment  
The problem isn't that you're going to start burning muscle, it's that your body is going to want to hold on to the fat. If your body thinks you're starving, it's going to hold on to what it has and not burn that extra 50 pounds you want to get rid of. Plus, it's going to hold on to whatever calories you do put in. You may actually GAIN!

Saturday, July 29, 2006, 6:32 PM

Add comment
lack of appetite can be a sign of over training- which will likely slow your weightloss down. Some days I swim for 45 min, run for 30, and do an hour long total body strength training session... and all I will have eaten that day was a banana and a handful of walnuts and then a late dinner of a salad with chicken. Def not enough to eat given the workouts. But I don't feel hungry- that's a BAD sign.

I'm notorious for skipping meals. I'm so busy sometimes I really do forget to eat. Or I refuse to pick up a bite to eat as I avoid processed/preservative laiden foods. But when you're working out, you have to eat.

Saturday, July 29, 2006, 6:34 PM

Add comment
Ok, so if I decide to eat some pizza and lets say eat 1500 just for dinner will my body realize it's not starving and burn some of the calories that it's been holding onto? I'm kinda scared to eat but I want a pizza and one slice has 700 calories

Saturday, July 29, 2006, 6:57 PM

Add comment
You need to read some nutrition stuff

It is not just the number of calories, it is what you eat. If you eat only carbs and sugar -- your body will hold onto fat and use muscle for protein.

If you are eating a balanced diet of protein, appropriate carbs, veggies, etc. within the calorie limits, you'll be fine.

Look into Andrew Weil's book on eating, such as 8 weeks to better health or Dr. Perricone's anti-inflammatory diet.

Pizza can be great depending on the ingredients or HORRIBLE depending on the ingredients and amount. 700 calories a slice is pretty high. There are some individual pizzas which only have 500 calories.

With pizza you need to watch the fat, cholesterol, trans fat, and especially the salt. They tend to have twice the amount of salt that you should have in one day!

Saturday, July 29, 2006, 7:02 PM

Add comment
Honestly, regular meals are best for your body. Sure, you need to shock it once in a while, but constant flux between feast or famine will still train your body to conserve. It's got a long memory- if you haven't been feeding it enough, overdosing your calories is not going to help- especially just one meal. It need consistent feeding for many different reasons.

Saturday, July 29, 2006, 7:10 PM

Add comment
I agree with most of what's been said above, but I also know that working out is an appetite suppresant for me, at least for the couple hours after I finish exercising. And it sounds like you don't really know how many calories you are eating. It is very, very easy to under-estimate calories and portion sizes...

I would say try to actually do a calorie count for what you eat in a day - there are lots of websites out there. Measure everything you put in your body, and look everything up. It's a pain in the neck, but 1000 calories/day is almost for sure too low, so figuring out if you are only eating that much is a good idea.

You can also just try your plan for a couple of weeks. Then, if you're not losing weight, try adding a 200-calorie snack or something.

One final thought: all "diets" need to be sustainable *forever* to work. Make sure that what you're eating is going to work for you for the next year...if you are severely restricting your caloric intake, you won't be able to sustain it, and the weight you lose will come back.

Monday, July 31, 2006, 12:51 PM

Add comment
When I first started to workout, and trying to eat right, I was not hungry at all when I worked out, I just went with the flow, and you will get hungry when your body needs the fuel. Please keep in mind that the human body is a complex system, and it will let you know you have to eat, and drink etc. I would have 2 good cheat meals a month to balance out the calories. And I think you would be good. This is what I did and I lost 110 pounds in 2.5 years.
I wish you luck

Monday, July 31, 2006, 1:27 PM

Add comment
How many calories while working out, how much protein after

this video provides an excellent answer to this question:

Friday, October 01, 2010, 4:48 PM

Add comment

Related Content:

How To Lose Weight- The Basics
Weight Watchers Points System
The Fat Smash Diet
The Eat To Live Diet
The Beck Diet Solution
How To Get The Motivation To Lose Weight


How To Be Successful Using PEERtrainer

How To Burn Fat
Online Weight Loss Support- How It Works
Does Green Tea Help You Lose Weight?
Tips On Using PEERtrainer
Visit The PEERtrainer Community
Diet and Fitness Resources


Weight Watchers Meetings
Learning To Inspire Others: You Already Are
Writing Down Your Daily Workouts
Spending Money On A Personal Trainer?
How I Became A Marathon Runner


Preventive Health

How To Prevent Injuries During Your Workout
Flu Season: Should You Take The Flu Shot?
Are You Really Ready To Start PEERtrainer?
Super Foods That Can Boost Your Energy
Reversing Disease Through Nutrition

New Diet and Fitness Articles:

Weight Watchers Points Plus
How To Adjust Your Body To Exercise
New: Weight Watchers Momentum Program
New: PEERtrainer Blog Archive
Review Of The New Weight Watchers Momentum Program

Weight Loss Motivation by Joshua Wayne:

Why Simple Goal Setting Is Not Enough
How To Delay Short Term Gratification
How To Stay Motivated
How To Exercise With A Busy Schedule

Real World Nutrition and Fitness Questions

Can Weight Lifting Help You Lose Weight?
Are Protein Drinks Safe?
Nutrition As Medicine?

Everyday Weight Loss Tips

How To Eat Healthy At A Party
How To Eat Out And Still Lose Weight
The Three Bite Rule
Tips On How To Stop A Binge