/u/DanTallTrees's posts in /r/askscience

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Why is elevating your heart rate through exercise good for your heart but elevating you heart rate with caffeine bad for it?

1695 upvotes

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Why do fighters lose their "chins"?

1 upvotes

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Can it be normal to have a mosquito like reaction to tick bites?

1 upvotes

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what would happen to the earth if the moon got hit by a meteor big enough to change its orbit. What chages in tides, weather, wildlife, etc.

1 upvotes

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How does an ocean abyss form? how deep can they go? What does it look like at the bottom?

1 upvotes

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What is actually happening when I have a "knot" in my back?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is elevating your heart rate through exercise good for your heart but elevating you heart rate with caffeine bad for it?	1695
Why do fighters lose their "chins"?	1
Can it be normal to have a mosquito like reaction to tick bites?	1
what would happen to the earth if the moon got hit by a meteor big enough to change its orbit. What chages in tides, weather, wildlife, etc.	1
How does an ocean abyss form? how deep can they go? What does it look like at the bottom?	1
What is actually happening when I have a "knot" in my back?	1