Most adults think cardio has to be hard to be effective. But one of the most powerful (and overlooked) tools for improving health, performance, and body composition is actually the opposite: Zone 2 training. Why Cardiovascular Health Matters Your cardiovascular system is the engine behind everything you do: energy, recovery, training performance, and long-term health. Improving it helps you: Feel more energized day to day Recover better between workouts Support heart health a