I started a large latte habit (which sounds silly) a couple months ago at my new startup job, but I've been working in tech for 3.5 years now. My tolerance is low so thats all I need to get kickstarted... but now I'm pretty dependent on it and can't get nearly as much done without it. At my last job, some SEs would have 5+ cans of coke a day. I think it was an overdose of caffeine/sugar.... which actually might be more unhealthy than Adderall. I'd be curious to see what people think of that.