The Truth About Building Strength in Later Life
This week, I've seen a lot of content floating around about strength training. The correct number of reps. The best exercises. The perfect routine. And honestly? A lot of it is confusing, contradictory and not especially helpful if you're an older adult who just wants to know what actually works.
So I wanted to cut through some of that noise and give you something honest, evidence-based and actually useful. No gym jargon. No complicated programmes. Just a straightforward guide to getting stronger and staying that way.
Strength For What, Exactly?
When most fitness content tells you that you need to build strength as you get older, it rarely answers the most important question: strength for what?
In my work as a personal trainer, that's always the first thing I ask. Because strength only becomes meaningful when it's connected to real life. Getting up from the floor without thinking twice. Carrying shopping bags without your arms aching. Climbing the stairs without holding the rail. Playing with grandchildren all day. Getting in and out of the car comfortably. Opening a heavy door.
At Jim's Gym, every workout and exercise we programme mirrors a real-life movement or task. And that's what makes progress feel real, too. You won't notice it on a set of scales. You'll notice it when a task that used to leave you tired suddenly feels easy. That's when it clicks. And that's when people stick with it.
How Your Body Actually Gets Stronger
You may have heard that strength training works by creating tiny tears in your muscle fibres, which then repair and grow back stronger. This idea has been around for decades but the latest research tells a different and much more interesting story.
When you perform a movement that feels genuinely challenging, your central nervous system, your brain and spinal cord, sends a signal to your muscles to recruit more muscle fibres to meet the demand. Initially it starts with the smaller, lower threshold fibres. As the load increases, it calls on progressively more fibres to help out. Over time your nervous system becomes more efficient at this process, firing the right fibres at the right time with greater coordination.
This is why strength increases quite quickly in the early weeks. Research shows that muscle strength typically begins to increase after only a few sessions, driven primarily by neural adaptations rather than changes in muscle size. Your brain is simply getting better at using the muscles you already have.
Over a longer period the muscle fibres themselves adapt too, with the contractile proteins within each fibre remodelling and becoming denser and more capable. Structural change, not damage and repair.
What this means in practice is simple. Every time you perform a movement that feels challenging, whether that's a chair squat, a resistance band press or a Zumba class that leaves your legs feeling like they've worked, you are triggering exactly this process. Your nervous system is learning. Your muscle fibres are adapting. You are getting stronger.
Let's Talk About Reps
Here's the honest truth: the right number of reps is completely subjective.
What matters is that the movement feels challenging for you. If you're doing ten squats and the last two or three feel genuinely challenging, your muscles are working. If you could easily do thirty, it probably isn't doing much.
Research comparing different training volumes in older adults found that one set performed to the point of muscular fatigue produced strength gains similar to those from multiple sets. More isn't always better. More challenging is better.
You Don't Need Heavy Weights
Heavy weights are not a requirement. What you need is resistance that feels challenging for your current level of strength. That might be a light dumbbell, a resistance band or your own bodyweight.
A chair squat, simply standing up from a chair and sitting back down again, is a legitimate strength exercise. Done consistently and with intention, it will make you stronger. Research published in Frontiers in Ageing found that functional movements like these produced significant improvements in real-world tasks like walking speed and balance, often more so than traditional gym-based exercises.
The best exercise is the one you'll actually do.
What to Do When It Stops Feeling Challenging
When an exercise starts to feel easier than it used to, that's brilliant news. It means it's working. But it also means it's time to make a small adjustment. Here are your options in order of time efficiency:
Add a little more resistance. The most time-efficient option. A slightly heavier dumbbell, a stronger resistance band or a filled water bottle. Small increases add up significantly over time and give you more benefit than simply adding more reps or more sessions.
Slow the movement down. Slowing a squat or a press to a count of three or four makes the movement considerably more challenging without changing anything else.
Try a more challenging variation. A chair squat becomes a squat without the chair. A wall press-up becomes a press-up on a lower surface.
Reduce the rest between movements. Less rest increases the overall demand without adding time to your session.
One small change at a time is all it takes.
The Bottom Line
Building strength in later life doesn't have to be complicated. You need movements that challenge your body, performed consistently over time. Once or twice a week, every week. That's it.
If it feels challenging, it's working. If you show up every week, you will get stronger. That's not motivational fluff. That's what the research says.
At Jim's Gym our Wednesday strength sessions are built on exactly these principles. Our 8am class uses resistance bands, perfect if you're just starting out. Our 8.30am class steps things up with heavier dumbbells for those ready for a more challenging workout.
But strength isn't just built in strength classes. Every class at Jim's Gym has an element of challenge, and wherever there is challenge, your body adapts and gets stronger. Zumba builds leg strength and agility. Yoga and Pilates develop core strength and stability. Tai Chi builds balance and lower-body strength. Dancercise works the whole body. If a class leaves you feeling like you've worked, it's doing more for your strength than you might think.
That's the beauty of a varied programme. You're building strength all week long, often without even realising it.
Find out more at www.jimsgym.fitness
Frequently Asked Questions
How often should I do strength training? Even once a week, done consistently to the point where movements feel genuinely challenging, produces significant strength gains. Twice a week is ideal but once a week consistently beats an over-ambitious programme you abandon after a fortnight.
Do I need weights to build strength? No. Your own bodyweight is a legitimate resistance tool. Chair squats, wall press-ups and seated leg raises all build real strength. What matters is that the movement feels challenging, not what equipment you use.
How quickly will I see results? Research has shown significant improvements in strength, balance and functional movement in as little as eight weeks with just two sessions per week.
How many reps should I do? There is no single correct answer. What matters is that the last few reps feel genuinely challenging. If you could easily do ten more, increase the difficulty slightly.
Is Jim's Gym suitable for beginners? Absolutely. Our Wednesday strength sessions welcome all abilities, everything can be adapted to your level, and there are always seated options available. No experience necessary.
Want to give it a try? Join Jim's Gym below from just £12.99 a month with a 30-day money-back guarantee. No contracts, no joining fees, just brilliant classes from your living room. It's almost too good to be true.
Our affordable monthly membership is great for those just starting out or may need to take a break for a big adventure! The yearly option gives you two months FREE membership with a 30 day money back guarantee.