A portable ladder having a pair of elongate stiles spaced from one another and each having first and second ends, and extending in a first direction; and a plurality of rungs each extending between the elongate stiles transverse to the first direction and having opposed ends one of each attached to each of the elongate stiles and each of the plurality of rungs being spaced from one another along the first direction, the rungs being arcuate in shape between the opposed ends.
