Most people, when they hit 50, and definitely when they hit 60 or 70, start to lose muscle mass and strength. And most of them think this is just a matter of aging.

But, while aging is definitely a factor here, there is much more going on that is speeding up this process.

I’m 74 years old and I still run in Ironman Triathlons.

I’m strong, I’m lean, and I have more energy than many people half my age. And I’m not alone in this.

So, obviously, age isn’t quite the factor most people think.

But there are key differences between those of us who still keep our muscle and strength, and those of us who don’t. And they’re not genetic.

They’re points that anyone can apply to themselves to start increasing strength and muscle mass again, no matter how old they are.