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Your blood cells constantly die and are replaced. None are older than about 4 months. But you can only sense this change from 20-21? And how do you 'sense' it?

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No i mean after 21 years old , u kindda felt diffrent from 20 below, your blood changes and eliminating the feeling of being 'young', sort of feeling weakened :eek:

And just what makes you think that "blood changes" has anything to do with it???? What do you think changes about it??

The only changes in my blood from 20 to 21 years old was a major increase in alcohol concentration.

As humans mature their bodies as well as minds/brains go through changes.

That's what maturity is all about. In your 30's your brain stops replacing the

brain cells as they die out so that from then on you feel even more changes

as life goes by. They say there's a 7 year cycle some say ten year cycle

that humans seem to have. Either way you'll notice more changes in those

time periods then in the others for some strange reason. Don't worry about

it though, we all go through it and it really doesn't hurt at all, getting old

that is. Until you get really old then body functions start to develop

problems.

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In what way does your blood 'change'? And how do you become aware of the change?

i mean that your blood changes thus ur feeling from 21 onwards is diffrent from 21 bellow

Very sorry to have to say this, but that's about THE nuttiest idea about human physiology that I've ever heard of!!!:bugeye: At 21 you are still working toward your peak.

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i used to be stronger (20 years below) u can feel the blood is diffrent.

Do you actually draw your own blood and feel it or what?

i used to be stronger (20 years below) u can feel the blood is diffrent.
HOW?

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HOW?

Just forget it - that's what I'm going to do. Someone has told this kid some stupid fable and he believes it. Or else he's just faking the whole thing. Either way, it's not even interesting enough to read another single one of his absurd posts. Pure garbage!! This whole thread should be Cesspooled immediately.:bugeye:

ok 20 below ur still young still strong then blood changes , become weaker ..
Oh, I'm a very patient, persistent person, Read-Only.

How do you know it "becomes weaker"? What is your evidence?

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Did you have a TRANSFUSION?

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Then go out and get a TRANSFUSION quickly!!

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Better, Stronger blood that's why.

Don't... he might even do that

It wouldn't hurt him and you know that.

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Dear archimonde this is a bad sign a very bad sign indeed. It isn't normal at all, I think you should get checked for mad mad disease it is similar to mad cow but without the cow.

He is a loony.

http://www.sciforums.com/images/statusicon/thread_dot_lock.gif

Oh dear [insert deity of choice here]..

Firstly, if you are feeling weak and unwell, the best thing to do would be to go and see your doctor as quickly as possible. It has nothing to do with your age.

Secondly, your blood does not have a cut off that when you reach 21, everything changes and you no longer "feel young". How in the hell a 21 year old can say he does not feel as "young" as a 20 year old is, quite frankly, beyond me.

Aren't you supposed to be in your prime when you are 21?!

^ 21 years old are paranoid alocoholic drinkers