<p>Morro Bay (San Luis Obispo County) -- This figures to be the last place you would find Jack LaLanne, fitness icon to countless Americans of a certain age, on a gloriously sunny afternoon along the Central Coast. But there he is, supine on a sofa. His shoes are kicked off, his nose buried in a newspaper. The man is, for maybe the first time in his 88 years, completely at rest. In fact, he is not moving.</p>