Germinate seeds in a cup of water??

I was going to just put my seeds in a cup of room temp water to germinate........But ive read that this is not a good idea, because if the seed is in the water for over 24hours it gets no oxygen. Causing the seed to not crack open. Has any one had success with this method? It seems like an easier way then the paper towel method

Several out there begin submerging seeds in a cup & after 12 or so hours switch off to the paper towel.
I stick with the tried & true method (moist paper towels on a plate with a heat mat to keep things warm. It works very well for me.
GWN