Does Caffeine Affect Accuracy Of Temp/pulse Reading?

I take my temp and pulse thing on waking.

Then again one hour after breakfast. I was just wondering if I've just had a load of coffee with my breakfast, wouldn't that affect my pulse/temp readings and maybe give a false high?

So I might be seeing the effects of the stimulation of the caffeine rather than a true picture of thyroid function?

I know that caffeine is supposed to act like T3, but I think a caffeine-induced speeded up pulse is different.

 

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