The Cardio Edit: Learning to Work with My Midlife Body

 

I did everything “right”… and still gained weight 

Let’s talk about the type of cardio we should be doing in midlife.

I grew up playing soccer, where conditioning and speed were everything. Later, while training for figure competitions, I spent hours doing steady-state cardio- running, elliptical, stair mill, sometimes up to two plus hours a day. Like many of us, I was taught that running was better than walking, that cardio mattered more than strength training, and that getting your heart rate up was the key to burning calories and protecting your heart.

And then came the midlife edit.

What worked effortlessly for years suddenly stopped working. I learned this the hard way when I realized that running, something I had done on and off for most of my life, was no longer serving my body. In fact, every time I trained for a half marathon, I gained weight instead of losing it.

What I eventually discovered was that my cortisol levels were chronically elevated when I ran consistently. Cortisol is often called the stress hormone. It’s released by your adrenal glands and plays an essential role in the body, helping regulate blood sugar, blood pressure, inflammation, and our ability to respond to short-term stress. Cortisol itself isn’t the problem. We actually need it.

The issue arises when cortisol stays high for too long.

In midlife, our bodies become far more sensitive to stress- physical, emotional, and hormonal. Long runs, intense training, poor sleep, under-fueling, emotional stress, and the constant mindset of “pushing harder” can all signal danger to the body. When cortisol remains elevated, the body shifts into survival mode. Instead of burning fat or building muscle, it focuses on protection.

Chronically high cortisol tells your body to:

• Hold onto fat (especially around the midsection)
• Break down muscle tissue
• Spike blood sugar and insulin
• Increase inflammation
• Disrupt sleep and recovery
• Interfere with estrogen and progesterone balance

For me, running kept my body in a constant fight-or-flight state. I wasn’t doing anything wrong. I was simply asking my midlife body to respond the way my 30-year-old body once did and it couldn’t.

This is why managing cortisol becomes critical in midlife. It’s not about doing less; it’s about doing what your body can actually recover from. And believe it or not, walking is one of the best forms of cardio for midlife. You can still include short bursts of intensity but think 10–15 minutes a couple of times a week not hours every day.

Now, I walk daily. It starts with walking my dog every day , continues with a walking pad at work, and my goal is 12,000 steps a day, though I often average closer to 15,000. A few times a week, I add a weighted vest, which has been a total game changer for strength, bone health, and overall conditioning without spiking stress.

So, start by simply moving every day. Begin with a 20–30 minute walk, no pressure to go fast or far. Consistency matters far more than intensity at this stage. I highly recommend using a watch or tracker that counts your steps, it’s absolutely worth the investment and incredibly motivating.

If you’re not moving much right now, set your first goal at 8,000 steps a day. Once you can hit that consistently for 30+ days, increase your goal to 10,000 steps. When 10,000 steps feels routine and sustainable for three months, level up again and aim for 12,000 steps a day.

This isn’t about perfection or pushing harder, it’s about building momentum, lowering stress, and creating habits your body can actually thrive on. One step at a time really does add up.

Midlife isn’t about pushing harder.
It’s about learning how to work with your body again.