Precerpt from Grandma's Ninja Training Diary: The Warrior Who Doesn't Sweat

People envy me. I don’t sweat. Not a drop. I can run, jump, shadow box, and bosun-ball my way through a workout, and my skin stays dry. But my trainer Brittany? She didn’t celebrate. She said:
“No, no—not good. You’re not exchanging fluids.”

She was right.

🔥 What Happens When You Don’t Sweat?

Sweating isn’t just about cooling off. It’s how the body:

Regulates temperature
Releases heat
Balances electrolytes
Signals exertion limits

Without sweat, heat builds up. I turn bright red after 10–20 minutes of intense exertion. Brittany sees it and sends me to hydrate and rest. Because even if I look composed, my body is waving a red flag.

🧬 The Science Behind It

This condition is called anhidrosis (or hypohidrosis if partial).
It’s rare, but not unheard of. Causes range from genetics to nerve or skin conditions.
The danger isn’t vanity—it’s overheating, especially during cardio or high-intensity work.

🧘‍♀️ Ninja Strategy: Cooling Without Sweat

Hydrate early and often: I drink before, during, and after workouts—even if I don’t feel thirsty.
Rest strategically: I take short breaks before I feel faint or flushed.
Cool-down rituals: Fans, cool cloths, and shade are part of my post-training routine.
Monitor skin and breath: Redness and shallow breathing are my cues to pause.

🧠 Ninja Wisdom: Listen to the Body You Have

I don’t sweat. That’s my reality. But I adapt.
I train with awareness, not envy.
And when Brittany tells me to rest, I don’t argue. I hydrate, breathe, and return stronger.

So yes, I’m the Grandma Ninja who doesn’t sweat. But I still train. I still move. And I still learn. Because being a ninja isn’t about perfection—it’s about presence.

Grandma’s Ninja Training Diary is the inspiring true story of a 70-year-old grandmother who dares to dream big—by training for American Ninja Warrior. Teaming up with coach and trainer Brittany Renz, she embarks on a three-year journey to build strength, resilience, flexibility, balance, and endurance—starting from scratch.

Told in a dynamic mix of diary entries, coaching insights, and behind-the-scenes reflections, this book chronicles the ups and downs of late-in-life athletic training. From gym workouts to rock climbing, yoga to injury recovery, sleep to mindset—every aspect of the transformation is explored with honesty and humor.

Grandma shares what she’s learning; Coach Brittany explains why she’s right—or wrong. Together, they offer a realistic, encouraging look at what it takes to pursue an extraordinary goal at any age.

Part training manual, part motivational memoir, Grandma’s Ninja Training Diary is packed with practical tips for readers over 50 who want to improve their fitness, health, and confidence. You’ll also get insider insights into the world of American Ninja Warrior, strategies for balancing real life with ambitious goals, and hard-won wisdom about success, failure, and the joy of simply showing up.

To read more precerpts from Grandma's Ninja Training Diary, click HERE.

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