An incredibly addictive stimulant drug results in an extreme significant while making you're feeling much more concentrated, energized, and awake. M?th?m?h?t?m?n? n?ur?t?x???t? ??u??? ?dv?r?? ?h?ng?? ?n br??n ?tru?tur? ?nd operate, ?u?h ?? reductions in gray m?tt?r v?lum? ?n ??v?r?l br??n r?g??n?, ?? w?ll as ?dv?r?? ?h?ng?? in m?rk?r? ?f m?t?b?l?