Remember, hybridization occurs because it increases the volume of the lobe interacting with the other atomic orbitals. And this increase in overlap will increase the strength of the bond. So hybridization takes place so that there is a better overlap between atomic orbitals and this stabilizes the bond. So before hybridization took place, we had the following picture of our carbon atom. So, the carbon atom has four bounce electrons. Two bounce electrons are in the two S orbitals shown here.