Is it normal that I like the feeling of gagging?

i have the same exact thing! it helps wake me up in the morning. when im feeling really tired even if ive only slept 3 hours, the gag reflex from scraping my tongue with my toothbrush wakes me the hell up; quick! makes sense; my body thinks im in danger, then gives me a free adrenaline kick. its instant, almost like shooting drug... perhaps this is a dangerous habit?? :P