I had a theory in school that this was the case for presentations too so I always forced myself to go first. No one else to compare me against, and no sitting around getting jittery.
If I'm drinking calories in the form of fermented grass juice -- or anything that isn't plain water -- it'd better be delivering some sort of effect having substance, be it caffeine or alcohol.
A potato is far more energy dense than popcorn. 2 cups of popcorn looks like a good amount of food, but it's only ~150cal. A good way to trick your brain into thinking it's doing a lot of eating.
Source: worked for me. And is a basically daily staple
More money doesn't make the wind blow more often. And there's only.so much capital that can be spent on material science before you hit a limit on the rate of improvement per unit time
Plants don't typically pull lead out of the soil through their roots. Your main concern should be surface contamination from soil getting splashed onto the plant when it's watered / rains