What Happens When We Spank

When a spank lands it drives energy into the bottom flesh. The energy
does various things. Some of it escapes as sound (the slap). Some of it
turns to heat, warming the bottom. Some of it softens the tissues and
some of it stimulates the nerves (or dermatones) in the bottom sending
signals to the brain.
All spanking is cumulative. If you spank too slowly all the energy
will have drained away before the next one arrives so the overall
effect will be negligible, not very good for instilling discipline or
getting your partner into a restorative mood. The idea is to time the
frequency of the spanks so that not all the energy has dissipated before
the next one arrives. Get the timing right and the bottom will slowly
heat up and become hot to the touch. The continuous striking of the
flesh will cause it to turn red as more blood circulates through the
tissues and the skin reacts. The regular pattern of nerve stimulations
also sets up a wave that ripples up from the bottom to the brain. With
the right timing and intensity of spanking, these factors act together
causing the body to release adrenalin and endorphins.
Spank too hard, too quickly, and the bottom will go numb (the
nerves switch off) and your spankee will not get the benefit of the
spanks. Afterwards, when feeling returns, they will be unexpectedly
sore. Keep spanking and the bottom will become quite hot and turn an
angry purple or blue. This is the time when bruises or injuries are
likely. There is a lot of blood circulating and the cumulative impacts
can weaken the skin to form bruises. Taking a break every so often
and stroking the bottom allows the cheeks to recover, lets the heat
dissipate, and so prolongs the time before the bottom goes numb. This
is a good idea if the objective is a therapeutic spank. You want to keep
the cheeks alive and sensitive for as long as possible. Even in a
corrective spank, you still want to get the message through to the
brain. Although, having to sit on a cushion for a time afterwards can
be similarly effective!