Zero to Sixty Adrenaline Rush with Sharon Twombly is a hard-core workout that is designed to improve your cardiovascular fitness, increase your muscular endurance, and strengthen and streamline your body. This workout begins with a high intensity cardio interval section that immediately flows into a heavy duty sculpting section. Adrenaline Rush is fast paced with little to no rest between exercises and will challenge your entire body. A modifier is present throughout the entire workout for exercisers working to improve their fitness levels or for exercisers with a lower impact preference. Pre-mixes are available that specifically target cardio and/or strength elements in under sixty minutes.