I'm about to save y'all's fuckin' lives, you ready?
If you're like me, first off - I apologize, but secondly you're shoes probably suck and your heel slips free every time you take a step with the default, out-of-the-box lacing method, yeah?
Turns out not many people know about the various heel-locking methods for running shoes and boots. You create additional 'loops' by lacing over the additional holes/hooks and then trying through them, keeping your heel in place.
Hope this helps!