Originally Posted by blickblocks

Generally speaking, an upright cruiser style bike is no better than an aero-hunch road bike. When you are sitting upright, your weight and all road shock causes your spine to compress vertically. On a road bike you are stretched out, meaning you are using your muscles, not your skeleton, to support your body. If she plans on doing any riding more than a couple blocks, it might be worth checking out a proper-fitting road bike.