Break out of the ordinary with an hour of riding at Blackhound Equestrian, nestled in the hills of Cull Canyon Rd. in Castro Valley. The lesson will be taught by a qualified instructor, so enjoy the ride and soak in the scenery. If you're lucky, you may hear frogs singing in the nearby creek and pet the barn cats. How's that for passing time? Clothing restrictions include blue jeans, sneakers and a bike helmet.