Walking about two miles. Push-ups, pull-ups, planks. Also, hamstring, glute, hip flexor, hip (side raises), calf raises with ankle weights, and squats.
I walked about 2.5 miles fast, and climbed the overpass stairs 20 times, two at a time. No pain at all, but I didn't dare run after what happened with my left calf yesterday. Strange. Still sore (DOMS) from squats.