Alan Baker 
This lecture hits because it challenges the story most people were taught: “eat less, move more,” and “calories in, calories out.” The core message is that the real battlefield is hormonal, and the biggest player on that field is insulin. When insulin stays elevated, your body changes what it does with food. It stores more, burns less, and you end up hungry again even when you have eaten plenty.
In my 55th year, I’ve found myself doing something that I think a lot of disciplined people eventually do. I’ve started digging up the old habits that worked. Not the trendy stuff. Not the new hack of the month. The foundational practices that built my body, my discipline, and my mindset in the first place.
There comes a point in every warrior’s life when the pursuit of power, precision, and performance gives way to a deeper question. How do I preserve it? After decades of training in the martial and combative sciences, I came to realize that longevity is not simply the absence of decay. It’s a skill. It can be trained, refined, and lived.
I talk about developing timeless tools all the time, because I’ve watched the same story play out for decades. A student starts training, gets excited, gets strong, gets fast, learns a pile of techniques, and for a while, they feel unstoppable. Then life shows up. Mileage shows up. Injuries show up. Stress shows up. Work, family, travel, responsibility, time under tension in the real world. Somewhere down the road that same student starts saying the sentence that makes my eye twitch: “I’m just not what I used to be.”
Inside every man or woman who trains, there’s a quiet understanding that most people will never touch. You can’t grow without pressure. You can’t sharpen without friction. And you can’t claim you’re building a warrior’s life while avoiding the very challenges that forge your identity. The hard season is not a detour. It’s the curriculum.
I have been doing various forms of fasting for the majority of my life. I was introduced to the concept by one of my Kung Fu teachers when I was in my teens, and it has been something I’ve followed ever since. It was never presented to me as a “diet.” It was presented as a practice. Discipline. Control. Clarity. The ability to operate without being ruled by comfort. Over the years, I saw something else too.
When people watch high-level performers, they often ask some version of the same question: “How do you just flip that switch?” One moment, you are relaxed, laughing, talking with friends. The next moment, your posture changes, your eyes harden, your breathing drops, and your whole presence shifts into a different gear. From the outside, it looks like magic. It is not magic. It is training.
You can spend years training in a traditional martial art, earn rank, move beautifully in forms, flow through drills, and even do well in sparring, yet still be completely unprepared for real violence. That is uncomfortable to admit, especially if you have invested a big part of your life in your art. But if you care about protecting yourself, your family, or the people you are responsible for, you have to be willing to look at some hard truths. Being good at your art is not the same thing as being prepared for chaos.
If you spend any time in the defensive tactics, martial arts, or combatives world, you have seen the same scene play out. People suit up in large, padded outfits, full-face helmets, thick gloves, groin protectors, shin guards, and sometimes chest and back armor. The instructor announces that they are going “full force” and that now the training is “real.” From the outside, it looks intense and impressive. From the inside, everyone feels the adrenaline spike. They breathe hard, struggle, shout, and come away with the sense that they did something truly serious and realistic.