A twisting exerciser includes a base having an arched track arranged along the periphery thereof, two swivel arms each having a front end pivotally connected to a pivot at the top center of the base and a rear end provided with a knee pad and slidably coupled to the arched track of the base, a handlebar detachably fastened to a stem at the front side of the base and having two grips at the distal end and a connection rod for selectively joining the two swivel arms for synchronous movement along the arched track of the base.