Strong body makes the mind strong.
Strength training stimulates endorphins, neuro-transmitters, making you feel good during and fallowing strength training. It is improving blood flow with that brings oxygen and nutrients to your brain.
Regular strength training improves your mood, decreases anxiety, improves sleep, decreases stress and raises self-esteem.
When your body is strong, firing on all cylinders, your mind is strong too, you can’t help but feel more focused and, yes you are smarter.