my tough little bugers (yeast)

So, last weekend (my usually bi weekly feeding schedual), I feed them, but left it out until last night (5 days in room temp) when I finally fed it again with a 1:4:4.  This morning ~10 hours later, it's sitting there doubled. I'm thinking to myself...   perhaps I'm creating a super strain, where only the strongest survive... but perhaps just an active imagination.   Smelt great with no hooch or strange side affects.