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Weight variation after lifting weights or working out

Has anyone experienced a variation in their weight after lifting weights or a tough workout ? I'm finding that if I weight myself the morning after a tough workout the night before the scale tells me that I'm heavier than the day before.

For example.... i haven't worked out for two days I get on the scale I'm 147. I lift weights at night, get up in the morning, feel kind of sore get on the scale I'm 150.

It's extremely frustrating. I never know when to way myself or if what I'm seeing is accurate. Could it be my scale ?

Also last week my scale said I was 29% fat and 148 now its saying I'm 31.5% fat and 148.


Tue. Nov 27, 8:23am

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YES! I had a very intensive workout with a trainer last week and when it came time for weigh in I was up 4 pounds. Even though I knew it wasn't true, I'm eating too much, weight - I about died! The scale came down 4 and then some the next time I weighed in.

Tuesday, November 27, 2007, 8:29 AM

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Please excuse my spelling! Geez.\

Ok so I'm not the only one that this happend to.

Is there a rule of thumb out there as to when to weigh in? If I'm working out 6 days a week (which I'm not... but I plan to!) when can I weigh myself and get an accurate weight ?

Tuesday, November 27, 2007, 8:47 AM

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When you do a heavy workout or lift weights, you are effectively tearing your muscles. (but this is a good thing - it's how they grow and get stronger.) They then retain a lot of water in order to help them rebuild/heal. So it is best to weigh in when you are not sore, if you want an accurate reading.

For the poster who is going to work out 6 days a week, you'll probably weigh the least the morning after your "rest day," before you do your workout for that day. But really, losing weight is about the trend - do you weigh more or less than you did at the same time last week?

Tuesday, November 27, 2007, 9:50 AM

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Oh, and the body fat readings on scales are famously inaccurate. They're done by sending an electric pulse through you, and things like how moisturized your feet are, how much water you've drank, etc., will change the reading. Even under perfect conditions, I'm not sure that the readings are accurate.

Tuesday, November 27, 2007, 9:51 AM

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I have the same experience. I gain a little weight after a hard workout the night before. The weight is usually back to normal (or even lower) on the second morning after a strength workout.

Tuesday, November 27, 2007, 9:53 AM

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