Yiziphi ezinye izivivinyo ezinhle zokulinganisa isisindo somzimba ezisiza umzimba nama-abs?
Ukuvivinya umzimba okuhle okuqinisa umzimba nokuqinisa izicubu zangaphakathi kungama-crunches, ama-bicycle crunches, ama-side v-ups, ama-sit ups, ama-planks, ama-dead bugs, nokuma kwebhayisikili.