I’m going to nerd out with you today, and I think you’re going to love it.
One of the most common things I hear from people when they first start working with us is some version of “I’ve been going to the gym, but I have no idea if what I’m doing is actually working.” They’ll watch a YouTube video, follow along with some workout titled “exercises for people over 50,” and do whatever the person on screen is doing without understanding why they’re doing it. And then a month goes by, nothing changes, and they assume strength training just doesn’t work for them. But it does work. It works incredibly well. The issue is almost never effort. It’s architecture. Most people have no structure underneath what they’re doing, so all that effort goes nowhere.
So I want to give you the blueprint. This is exactly how we build workout programs for our coaching clients, and it’s pulled directly from the course material I just finished recording for our upcoming Forever Fit program. I’m going to walk you through rep ranges, sets, rest periods, volume, and how often to change your program. By the end of this, you should be able to look at your current workout and know whether it’s actually set up to change your body, or whether you’re just moving for the sake of moving.
Not all reps are created equal
This is the foundation, and most people skip right past it. The number of repetitions you perform per set isn’t arbitrary. Each range activates your muscles differently, serves a different purpose, and should be used at different stages of your journey. Here’s how it breaks down.
The 15 to 20 rep range is what I call muscular endurance. Because you’re doing that many reps per set, the weight is going to be lighter by default, and you’re resting about 60 seconds between sets. The purpose of training in this range is to build stamina, cardiovascular conditioning, and most importantly, movement habit. This is where everyone should start if they’re new to strength training or coming back to it after a long break. The reason is simple. Before we load the body with heavy weights, we need to make sure the body is moving correctly. If your squat is all over the place, your knees are caving in, your back is rounding, your hips are shifting to one side, adding weight to that is just asking for an injury. So we start here. High reps, lighter weight, sometimes no weight at all, and the goal is to wire the movement patterns into your nervous system so deeply that your body just knows what to do. Think of it like learning to drive. You don’t start on the highway. You start in a parking lot until the mechanics feel natural.
The 8 to 15 rep range is muscular hypertrophy, and this is where the magic happens for body recomposition. The weights are moderate to heavy, enough that those last two or three reps of each set feel genuinely challenging. You’re resting 60 to 90 seconds between sets, and the purpose is to stimulate the muscle tissue to grow while supporting fat loss. This is the range where you’re going to spend the majority of your training life, and it’s the range that produces the most visible and functional changes in your body. When I say body recomposition, building lean muscle while losing body fat, this rep range is the engine that drives it.
The 3 to 6 rep range is pure strength training. The weights are heavy, the reps are few, and the rest periods are long, two to three minutes between sets. I’m including this for education, but I want to be direct. If you’re over 50 and you haven’t been strength training consistently, you don’t need to touch this range. It’s hard on your nervous system, it requires excellent form that takes time to develop, and the risk to reward ratio isn’t worth it when the hypertrophy range will give you everything you need. I competed in powerlifting years ago. I was deadlifting 550 pounds, squatting over 400, bench pressing over 300. My joints were hurting all the time. We don’t need to go there. But I want you to understand it exists so that if someone at the gym tells you to “lift heavier,” you have the context to know what that actually means and whether it applies to you.
Why this matters more after 40
There are two types of muscle fiber in your body, and understanding them changes how you think about training.
Type 1 fibers are your slow twitch fibers. They’re activated by lighter loads and higher repetitions, and they’re responsible for endurance and sustained effort. Think of gardening, long walks, cycling, anything where you’re using your muscles repeatedly over an extended period. These fibers are important for daily function and long-term cardiovascular health.
Type 2 fibers are your fast twitch fibers. They’re activated by heavier loads and more explosive effort, and they’re responsible for power, strength, and the majority of visible muscle mass. These are the fibers that make you look and feel strong. You start tapping into them when you’re working in the lower end of that hypertrophy range, around 8 to 10 reps with a weight that genuinely challenges you.
Here’s the part that matters. After the age of 40, we lose type 2 fast twitch muscle fibers at an accelerating rate. That’s one of the primary reasons strength, power, and muscle mass decline with age. It’s not just “getting older.” It’s the specific loss of these fibers because they’re not being used. Lifting progressively heavier weights, safely and over time, is the only way to preserve and rebuild them. Walking won’t do it. Yoga won’t do it. Even cycling won’t do it. Those are all wonderful for your health, but they primarily engage type 1 fibers. If you want to keep the muscle that keeps you independent, mobile, and strong as you age, you have to load the body in a way that recruits type 2 fibers. That means strength training in the hypertrophy range with weights that actually challenge you.
