Bay seniors can find activities far more peaceful than bobbing in a rocking chair at Tassajara, the Zen retreat tucked deep in a valley in the Santa Lucia Mountains near Big Sur. Amenities are rustic, meals are artisan vegetarian. There is a rich menu of sessions, meditations and classes that cover healing, mindful living, Zen/Yoga combos. The staff includes Buddhist priests, poets, yoga instructors, and authors. Electronic devices are not encouraged. Classes until Sept $14, running from $174-$434 + lodging ($100-407).