<human>: How do you do this: to prevent your bathroom mirror from fogging up after a hot shower

OPTIONS:
- after  showering, run a bar of soap over the mirror lightly, making sure to cover the whole surface.
- Before showering, run a bar of soap over the mirror lightly, making sure to cover the whole surface.
<bot>: Before showering, run a bar of soap over the mirror lightly, making sure to cover the whole surface.