CIA 2804: Athletic Step Jam (2008) with Sharon Twombly A solid step-aerobic workout followed by a unique stability ball aero/tone series. The first segment burns the fat; the second boosts the variety. The step moves are powerful and athletic with carefully designed transitions. Sharon Money Twombly teaches a basic pattern, then gradually removes the filler moves while adding hops, slides and directional changes. The aerobic portions use the ball to add intensity (e.g. holding it overhead as you move). The toning intervals use the ball as a resistance tool (e.g. pressing it between your thighs while doing plyometric jumps).