So in a way, we can imagine that what the plasto phase does is it extends the time of contraction. It extends the period of time where our inside of the cell is basically positive with respect to the outside. So this is phase number two, our plateau phase. And phase number three is this phase. This is known as our repolarization phase. This is when our calcium voltage gated channels essentially close, and that causes the opening of even more potassium voltage gated channels, and that creates a very high efflux of our potassium to the outside.