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I am confused about the calorie differential??

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UNIDENT's Photo Posts: 33,498
5/14/13 2:58 A

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No need to guess! :)

If you've increased exercise, then manually enter "how many calories you will burn in a week" on the fitness goals page. This will adjust your food range if necessary.

Deb, in New Zealand

MOTIVATED@LAST's Photo Posts: 13,648
5/14/13 12:22 A

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Most nutritionists recommend a maximum average calorie deficit of 1000/day. So 700 is fine.

I think it definitely helps to look at this as a weekly average, rather than on a daily basis. If you are constantly adjusting what you eat based on how much exercise you did that day, it is very hard to build up long term healthy habits. The body has a usable reserve of energy of about 2000 calories, easily enough to cope with short term fluctations in workout intensity as long as the longer term average is fine.

In coming up with an intake recommendation, Spark takes into account your Exercise Goals. So as long as those Goals (accessible from the LH side of the Start page) are consistent with your increased workout intensity, then Spark will be recommending an intake consistent with your goals and needs.


The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

 current weight: 178.0 

JESSAELINN's Photo SparkPoints: (14,189)
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5/13/13 9:23 P

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It's only a 200 calorie difference, but I think you should aim between -200 to -300 if you can, otherwise you could put your body into starvation mode. Remember also, the calories lost while working out is a guess, so I wouldn't go too far below your calorie needs, just in case you are actually burning more than the machine says. In the end, you'll be able to tell through your weight loss results. If you aren't losing weight, it might be because you're not eating enough, due to the fact that if you burn too many calories, anything that you eat, your body will want to store as fuel, rather than burn it because your body feels starved. I hope things go well, and good for you for increasing in intensity!

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EATENBYSHARKS's Photo SparkPoints: (1,523)
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5/13/13 9:13 P

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Okay, so my calorie goals are between 1,210-1,560 a day. I was doing a lighter workout that was only burning 200 cals, so that was fine. But now I started to do a higher intensity workout for longer. Which is burning 400-500 calories.

I ate a little over my goal today: 1,645

On my calorie differential page, it says I am -700. Is that okay? I think it's supposed to be -500, right? This is my first day working out harder and I don't want to screw it up. So should I be eating a little more or is it fine how it is?

Edited by: EATENBYSHARKS at: 5/13/2013 (21:14)

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