Is anyone else struggling to remember what day of the week it is? Or forgotten what green juice tastes like? My self-diagnosis: a severe case of holiday burnout. The antidote: a healthy days-long dose of sweat! These cute new Nike sneakers make me want to jump into action in myriad ways: the low-key , bottom, are for long runs and gym classes, the wintry-hued middle retro work for lapping the park and running errands, while the (nearly sold out everywhere) , top, pound the streets and treadmill in style.