If you don’t have function you don’t have a strong body. Period.
Your “strong muscles” eventually won’t be able to muscle through the same exercises you got away with in your youth or with your genetics. The way your body naturally moves will need the appropriate muscles working to facilitate movement or you’ll start allowing your body to compensate at basic tasks, allowing pain and injury to “sneak” up on you.
In reality the pain and injury stems from poor exercise habits that don’t train function. You can’t cheat your way or “muscle” your way through the mechanics of human movement, like when you walk or run, because there are too many variables occurring to facilitate these movements that your brain can’t coordinate them while you’re doing them.
Instead it is beneficial to dissect specific functions that happen during walking or running and training the variables of those specific functions. This will allow your body to carry over the functions learned into the real world when your body naturally moves through those functions. So start executing functions that your body needs to do instead of executing exercises that you see in magazines and YouTube videos.
If you need help distinguishing what functional exercises really should accomplish then start training with our biomechanics trainers so you aren’t just exercising for the sake of exercising, but exercising to enhance function outside of the gym!