The Memorial Park trails are Houston's hottest happy-hour scene, and doubly so in summer. Scores of joggers and walkers in varying amounts of workout wear end their workdays by bending a knee (both knees, really) instead of an elbow. The park actually contains more than 30 miles of trails, but most of the action is on the Seymour Lieberman Exer-Trail, the nearly three-mile crushed granite path ringing Memorial Park Golf Course. Here, surrounded by reminders of the park's previous life as the U.S. Army's Camp Logan — "Artillery Woods," "65th Infantry Woods," "Logan Woods" — multitasking parents cruise by pushing ergonomic strollers, young professionals catch up on workplace gossip over gulps of Ozarka instead of cocktails, and hardcore runners prepare for their next marathon. The narrow parking strip near the tennis courts, meanwhile, can get so congested it resembles a Texans tailgate party. Smart exercisers know to come on weekends shortly before dusk, when they can soak up the park's considerable natural beauty practically all by themselves.