"Protective glasses are also a good idea if you can find a way to keep them from fogging (I haven't yet!!)."
1) Moisten a bar of soap with water and wipe the soapy water on your lenses.
2) wait for the water to dry in a soapy film on the lens.
3) Buff the film clear with a LENS CLOTH or soft towel. DON'T use a kleenex or something like that, it will scratch your lenses for you.
If you do this on both sides, your glasses won't fog... Works for me with my ski goggles & eyeglasses.