1) sugar, caffeine, monster drinks, sugar, earl
gray tea, amphetamine, methamphetamine are examples of commonly used stimulants that can cause a person to be tweakin. They can become
fast-moving, jittery and if on meth violently jumpy or shaky (trembling)
2)
ADD/ADHD, natural high, sugar high, caffeine high can cause tweakin (hypetactivity) where you'll just be all over t he place moving fast.
when someone is hyperactive it doesnt
mean they are under the influence of methamphetamine where meth high causes similar behaviour but is a different kind of hyper.