Keep in mind that Grounding and Bonding are different. Grounding is normally refereed to as touching the ground or being connected to the ground by some means of metal conductivity such as the ground wire in house wiring or metal/copper house plumbing that goes into the ground.
Most of us use bonding. Our bodies have current in them as well as the device that we are working on, a spark occurs when there is a difference in current between ourselves and the device (sparks cause damage) by bonding or attaching ourselves to the device we equalize the current, when the current is equal there is no spark. Bonding is done on by wearing a strap when working on electrical components such as Computers, Cellphones, Gaming Controllers and Consoles. A grounding/bonding strap has a clip on one end that would be attached to the device or anti static work mat, the other end would strap to your wrist or ankle with the metal side touching your skin.