You've never actually done dedicated strength training? Too much info is being given out by people who are making a career out of middle of the road training. If you've never done anything past a 5x5 or 4x6 rep range in your training and you've been doing the same old cookie-cutter crap for years then you really don't know nothing about strength yet.
The 5x5 fiasco has to stop. And people who want to act like you can dedicate your lift to a handful of exercises and one training method can't have their cake and eat it to.
If you're training is LIMITED when it comes to injury prevention you can't just tack on some foam rolling and mobility stuff and call it good. It doesn't work that way. Everything starts with the lifting, and indeed, the workout itself. You do these things to augment GOOD training not to make up for BAD training.
Frankly I'm sick of the "piece-meal" approach of self proclaimed experts who started strength training a couple of years…wait a minute…are 5x5's and the like really 'strength' training at all? Or are they "general" training for people who can still benefit from it? Since so many early adaptations are 'general' in nature then one could make a case for this. You gain strength from most anything you do with a weight at first. So when do we call it strength training if at first everything is somewhat equal?
Well, it shouldn't matter except that now we have people simply equating middle-ground approaches to "strength" and anything higher than 6 or 7 reps "hypertrophy" or bodybuilding training.
I've actually seen "strength and mass" programs read like this:
Squats 4x6 (heavy strength focused)
Lunges 3x8 (hypertrophy focus)
This kind of thing makes me lose my lunch. You would think that the difference between 6 and 8 was not 2. And that 24 isn't equal to 24. It's relative people. "Heavy" is only heavy compared to something else. It's not based on some silly rep chart.
I saw a blog post on a "5x5" site talking about correct grip. Frankly I do not take grip information seriously from someone who doesn't hold a bar with a maximal load on it regularly, let alone strength training information.