Don’t do it! At least, not very long in one sitting – it can lead to hemorrhoids, an unpleasant malady characterized by itching, bleeding, and worse. (Gross, I know, but you don’t want them in your future!)
When you are changing in your bedroom, locker room, or wherever, don’t sit. Stand while putting on your socks, pants and shoes. This will help your balance as you get older so you don’t fall and break a hip. And you will get older, so get in the habit now!
Also, when tying your shoes, stretch your hamstring! This could save you weeks on the bench watching while your teammates play your favorite sport.