How do you enjoy your youth??

I’m 16 and I see alot of adults talking about, “enjoy your youth while you can.” That got me thinking and now I’m afraid I’m wasting my “youth”. All I really do anymore is worry about and focus on my grades and future. And when I’m not at school or worrying I just sit at home/lay in bed all day and play video games or watch YouTube.

Is this just another one of those concepts that people get way too hung over and in reality it really doesn’t matter that much, or is there something else I should be doing with my life while I’m still young?