MSI Press Blog

Precerpt from Grandma's Ninja Training Diary: The Secret to Losing Weight: It’s Not Just Eating Less There is no question that beyond serious muscle training, I needed to lose weight. The weight, though, did not just disappear, though I tried hard to eat less—a lot less. Thanks to Brittany, my trainer, I learned that it really was not how much I ate, but what I ate.      Like most people trying to lose weight, I thought cutting calories was the answer. If I just ate less, surely the pounds would melt away. But instead of feeling lighter, I felt exhausted, cranky, and constantly hungry. Brittany took one look at my food choices and explained that my body wasn’t getting what it needed. It turns out that the key to weight loss wasn’t starvation—it was nourishment. I had to shift my focus from eating less to eating right. More protein, more fiber, and fewer empty carbs. More whole foods, fewer processed snacks. Instead of a tiny bowl of cereal that left me hungry an hour l...

  Ninja work requires strength, especially upper body strength. That is obvious to any who watch Ninja Warrior games, and I concentrated on upper body strength at every session with my trainer. But there is something else. When I began my ninja training, my bone tests showed mild osteoporosis, not atypical for my age. After a couple of years of strength training as part of my "ninja training, my bone density tested normal. The strength training added to the density of my leg and upper body bones. Walking took care of the spine. I used to think that walking was boring, and that walking was simple. You just put one step in front of the other over and over again, and soon you are striding along, losing weight and gaining health. Then, I learned about High-Intensity Interval Training , varying speed over time. My cup of tea. I could mis things up on an outdoor walk and distract myself from boredom by playing with the controls on the treadmill at the gym: fast, slow, almost-running, st...

  Precerpt (excerpt prior to publication) from Grandma's Ninja Training Diary -- There’s something incredibly humbling about needing to pause 2/3 of the way up a hill you’ve walked daily for years—especially when that hill is notoriously brutal, a football field long at a steady 30-degree incline. I’ve always taken pride in breezing past younger walkers as they gasp behind me. So, when I suddenly had to stop mid-hill for breath, I noticed. And I paid attention. When I mentioned it to my doctor, I half-expected a shrug and some comment about age or the difficulty of the climb. Instead, he took me seriously. “Any change without a clear reason is worth investigating,” he said. He was right. It turned out that my iron had plummeted from a healthy 40 to 29, well below the normal 35 average for my age—overnight. We’re still figuring out why, but I’m now on iron supplements and grateful we caught it early. Why? Because I listened to my body. That’s the heart of body awareness, and it’s on...

  Precerpt (pre-publication excerpt) from Grandma's Ninja Training Diary -- Memory, Muscle, and Motivation: Rediscovering Strength Later in Life When we return to exercise after a long hiatus, our bodies often surprise us with what they remember. The phenomenon of "muscle memory" isn't just anecdotal—it's a fascinating biological reality that gives older adults a significant advantage when resuming physical activity, something my trainer, Brittany, taught me. My own journey back to fitness revealed the veracity of that reality in unexpected ways. Despite decades away from military training, my body immediately recalled how to execute jumping jacks with surprising efficiency—completing 40 in quick succession when my trainer expected far fewer, and I could have kept going. My muscles had quietly preserved the neural pathways formed during my Army days, waiting patiently to be reactivated. This biological advantage comes from two mechanisms. First, the neural patter...

  Coming soon! Watch for it!  Grandma's Ninja Training Diary  (Leaver and Renz) 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,...