If you do the same thing all the time, it will gradually work less effectively -- if you squatted 2x/week, every week, and always loaded the same weight on the bar, within a few weeks your body will have adapted to that resistance and will no longer make the same improvements if any. The same applies to always running the same distance at the same pace, or knocking out 50 pushups every day.

If you get hurt, you’re not training to your full potential, or not training at all. At best, that sets your training back a few weeks. At worst, it kills your motivation and you find yourself completely off the bandwagon.

In the long run, better safety = increased performance.

Barbell training is a type of strength training that involves lifting weights with a barbell. It's like a one-stop-shop for all your fitness needs. You don't have to go to different stores for different muscles, because a barbell has got you covered from head to toe!