The Power of Intervals: Smarter Cardio, Better Results
Interval training is one of the most effective, research-backed ways to improve your cardiovascular health, build endurance, and get more bang for your buck. At its core, interval training means alternating between periods of effort and recovery. That could look like one minute of work followed by one minute of rest, repeated over time. According to organizations such as the American Council on Exercise and the National Academy of Sports Medicine, this style of training improves the efficiency with which your heart and lungs deliver oxygen throughout the body — a key marker of overall fitness and long-term health.
Why Interval Training Is So Effective
One of the biggest benefits of interval training is efficiency. You can achieve similar — and often greater — cardiovascular benefits in a shorter amount of time compared to steady-state cardio. That’s because those bursts of higher effort push your body to adapt more quickly, improving endurance, heart function, and overall conditioning.
Interval training also has a powerful effect on fat burning. When you alternate between effort and recovery, your body continues to use energy even after the workout ends — often referred to as the “afterburn effect.” While it’s not magic, research shows that interval-style workouts can increase calorie burn both during and after exercise, making them a smart option for those looking to support body composition and metabolic health.
Cardiovascular Benefits
Interval training doesn’t just improve your workout performance — it changes how your body functions at rest.
When you consistently train your heart with intervals, it becomes stronger and more efficient. Over time, this can lead to a lower resting heart rate, meaning your heart doesn’t have to work as hard to circulate blood throughout your body. In simple terms: your body gets better at doing more with less effort.
According to research highlighted by organizations like American Council on Exercise and National Academy of Sports Medicine, interval training can also improve VO₂ max — your body’s ability to use oxygen. This is one of the strongest indicators of cardiovascular fitness and is directly linked to better endurance, higher energy levels, and long-term health.
But the benefits don’t stop there.
Interval training has been shown to support:
Improved insulin sensitivity (how your body manages blood sugar)
Better circulation and vascular function
More efficient recovery between efforts
Increased stroke volume (how much blood your heart pumps per beat)
These changes mean your body becomes more adaptable — whether you’re working out, running around during a busy day, or simply recovering faster between activities.
And one of the most underrated benefits?
You feel it in your daily life. Walking feels easier. Stairs don’t hit as hard. Energy becomes more stable. Your body isn’t constantly playing catch-up — it’s working with you.
Why We Use the StairMaster for Intervals
Research supported by organizations like American Council on Exercise and National Academy of Sports Medicine shows that stair-based training can:
Improve cardiovascular fitness and VO₂ max
Build lower body strength and muscular endurance
Increase calorie burn in a shorter period of time
Support bone density due to weight-bearing movement
At Milo’s House, we love using the StairMaster for interval training because it’s:
Highly effective for elevating heart rate
Scalable for all fitness levels
Engaging (you feel the work without needing complicated movements)
It’s something different!
The vertical climbing pattern naturally increases intensity without requiring speed or impact, which makes it ideal for both beginners and advanced clients. You’re able to challenge your cardiovascular system safely while also building lower-body strength and endurance.
The Bottom Line
Interval training works because it’s efficient, effective, and adaptable. It challenges your heart, supports fat metabolism, and delivers results without requiring hours in the gym. At Milo’s House, our interval training isn’t about pushing you to exhaustion — it’s about helping you move with purpose, build endurance, and feel stronger over time. You don’t need to go all-out. You just need to show up, work within your range, and let the magic happen.
