GO CUBES is awesome. It's way more convenient than coffee. When I'm in the flow and I don't really want to get up and make / buy coffee, I just take two.
I've been an early adopter of these. They taste good and the combined cognitive boost of caffeine + L-theanine makes these really incredible. You chew these then you get the buzz of coffee without the hard crash and with more focus!
Stacks Accelerator
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Flow Club
CryptoPoops
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Dear Holmes