[header] How to wake up quickly [title] Let natural light in. [step] Our brains respond to natural light by sending signals to the nervous system to raise body temperature, produce the hormone cortisol and reduce the amount of sleep-inducing melatonin in the bloodstream, all of which are vital to feeling awake. [substeps] Make sure you don't have heavy blinds or curtains blocking natural light from your bedroom. 
Open the curtains and let the light in as soon as you wake up. During the winter months, when the sun rises later, consider getting an alarm clock that uses light to stimulate those important bodily processes.