"Interval workouts, the secret sauce to making road cyclists weep tears of jealousy as you drop them on the hills. But seriously, to balance cardio and muscular endurance, I'd say it's all about mixing it up like a crazy person. One day, it's 30-second sprints, the next, it's 3-minute climbs. And don't even get me started on hill repeats - those are just cruel. As for translating to real-world gains, just remember, if you're not dying a little inside during intervals, you're not doing it right. And to all you roadies out there, don't worry, I'm sure your 23mm tires will get you up that climb... eventually. What's your take on interval structuring, folks?"