# Trembling during and/or after exercise

**URL:** <https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417>\
**Category:** Factual Questions\
**Created:** [February 16, 2004, 1:14am UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417 "2004-02-16T01:14:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Themis00](https://avatars.discourse-cdn.com/v4/letter/t/13edae/32.png) [@Themis00](https://boards.straightdope.com/u/Themis00)\
**Post date:** [February 16, 2004, 1:14am UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417/1 "2004-02-16T01:14:48Z")

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What is the cause?

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**Author:** ![Philster](https://avatars.discourse-cdn.com/v4/letter/p/13edae/32.png) [@Philster](https://boards.straightdope.com/u/Philster)\
**Post date:** [February 16, 2004, 2:15am UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417/2 "2004-02-16T02:15:26Z")

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One of these:

Low water, sugar, sodium, potassium. These are common problems, but not all the possibilities.

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**Author:** ![KarlGauss](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/karlgauss/32/3713_2.png) [@KarlGauss](https://boards.straightdope.com/u/KarlGauss)\
**Post date:** [February 16, 2004, 2:55am UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417/3 "2004-02-16T02:55:50Z")

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Three reasons:

1. Muscle fatigue (trembling is a normal response to muscle fatigue - try holding a weight in your outstrectched arm)

2. The direct effect of adreanlin (released during exercise) on the muscles

3. Increased blood flow to the muscles (leading to bounding pulses)

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**Author:** ![Redsland](https://avatars.discourse-cdn.com/v4/letter/r/9de0a6/32.png) [@Redsland](https://boards.straightdope.com/u/Redsland)\
**Post date:** [February 16, 2004, 3:02pm UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417/4 "2004-02-16T15:02:43Z")

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Sometimes when playing sports, I’ll quite suddenly become ravenously starving, and will experience some muscle quiver. (I’ve been told that this is due to a sugar imbalance.)

My solution is to eat two or three Power Bars and drink a pint of Gatorade. After about 20 minutes, I’m ready to get back on the field.

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**Author:** ![cowgirl](https://avatars.discourse-cdn.com/v4/letter/c/8c91f0/32.png) [@cowgirl](https://boards.straightdope.com/u/cowgirl)\
**Post date:** [February 16, 2004, 4:40pm UTC](https://boards.straightdope.com/t/trembling-during-and-or-after-exercise/229417/5 "2004-02-16T16:40:19Z")

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When I started doing yoga I was pretty out of shape, and whenver I tried a strenuous pose (eg Downward Dog) I trembled uncontrollably to the point that I seriously worried about falling over.

With practice, though, it got better - after only a week or two. I think it was just a result of making demands on muscles that weren’t accustomed to it.