Instead of a steady slog, try these interval structures to keep it "hot" and interesting: The 5-10-5 Burn:
My heart rate was in the zone in under 5 minutes. staremasster hot
5 minutes at a moderate warm-up pace, 10 minutes of high-intensity intervals (30 seconds fast / 30 seconds slow), and 5 minutes of steady climbing. Skip-a-Step: Instead of a steady slog, try these interval