Abstract: An exercise machine has a base supporting a boom. The boom has an elongate rigid body that is attached at a proximal end via a pivot mount to the base such that the boom is able to pivot about an axis with respect to the base between a rowing configuration wherein the boom is horizontal, and a climbing configuration wherein the boom extends upwardly. A seat element is slidably mounted above the boom when the boom is in the rowing configuration. A row handle is attached to a row transmission system that includes a row cable that extends to a row resistance device. The boom has a pair of climb handles and a pair of climb pedals, each slidably mounted on the boom, for performing climbing exercises. A climber transmission system connects the climb handles and climb pedals to a climber resistance device.