By Josey Murray

Josey Murray is a freelance writer focused on inclusive wellness, joyful movement, mental health, and the like.

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Indeed, "the cognitive and physical energy is a temporary gift that instant-release caffeine gives,"* shares Ashley Jordan Ferira, Ph.D., RDN

https://tc.netlify.mindbodygreen.com/about

Ashley Jordan Ferira, Ph.D., RDN, mbg Vice President of Scientific Affairs

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Citation Ouroboros

Thanks for your speculation as to what the nature of this effect might be, but I don't need it. Unless you totally abstain from coffee, tea and fizzy drinks, you have no idea what caffeine is like after not consuming it.

Especially, seeing as another guy here speculates that taking a nap after drinking coffee is a caffeine effect on ADHD, perhaps you two might want to speculate against each other as to whose speculation is more correct, speculatively speaking.

Let's also consult Wikipedia:

Stimulants (also known as central nervous system stimulants, or psychostimulants, or colloquially as uppers) are a class of psychoactive drugs that increase alertness. They are used for various purposes, such as enhancing attention, motivation, cognition, mood, and physical performance. Some stimulants occur naturally, while others are exclusively synthetic. Common stimulants include caffeine, nicotine, cocaine (including crack cocaine), amphetamine/methamphetamine, methylphenidate, and modafinil. Most stimulants are highly addictive and damage health when addicted.