Historically, many of the great names in alpine climbing seemed to have just gone climbing as training. In fact, the model alpinist has often portrayed himself in literature as a half-crazed nonconformist, living life on the edge every moment he's sober enough to climb. It is true that amazing feats of skill and daring have been accomplished using this rather random approach. For some climbers that "life on the edge" approach may be the only way they can accomplish these feats, but there are far better methods to prepare for the challenges of alpine climbing.
Steve House