A good rule of thumb when bending is the low three strings (E, A, D) should bend down towards the floor while the high three strings (G, B, E) should bend upwards towards the ceiling. The two most common string bends are the half-note bend and the whole-note bend.
Can you bend down guitar?
Its ok to bend strings down, but as you progress you will get into 1-1\2 and 2 step bends which if you do on the G string, will be pretty much impossible if you bend towards the ground...you just run out of fret.