In standing just stop and notice your body thinking down your spine through your pelvis, down your legs to your feet. Feel the floor below your feet. Then think back up your body growing up like a tree. Your head is like a ping pong ball floating at the top of your spine.
Now expand your awareness all around you. Look ahead being aware of your peripheral vision, think above your head up to the sky, think behind you (if this is difficult place a hand on your low back and notice it) and then think out to the sides.
Expanding your awareness in this way enhances your nervous system.