Strength Training in Your 40s: The Four Mistakes I See Most Often

Most professionals start lifting properly in their 40s, not their 20s. The body is ready, the mind is finally paying attention, and the time off the table is now a real number on the calendar. After ten years of coaching exactly this client at AKFITNESS Studio in Richmond, four mistakes show up almost every time.

These are not beginner mistakes. They are smart-person mistakes. The mistakes a competent, time-poor, success-oriented forty-something makes when they try to apply twenty-something logic to a forty-something body. None of them are catastrophic on their own. Together they explain why so many people quit lifting six months in, convinced their body just is not built for it.

Here is what I see.

Mistake one: training like you are twenty-five

The classic. You used to do bench press for sets of eight, three days a week, with no warm-up, and walked out feeling great. Now you try the same thing and your shoulder is sore for ten days.

The body of a forty-year-old is not weaker than the body of a twenty-five-year-old. It is, however, less tolerant of mistakes. The connective tissue takes longer to adapt. Recovery is slower. Mobility restrictions you ignored in your twenties become injuries in your forties. The good news: the body still responds to load. You just have to earn the load.

The fix is not "lift less." The fix is build a proper warm-up that addresses your specific tightness, progress weight more slowly, and prioritise quality of movement over total volume. Two well-coached sessions a week beat four chaotic ones, every time.

Mistake two: doing what worked once

Someone tells you they lost fifteen kilograms doing HIIT. You start doing HIIT. Three months later you are smashed, your knees hurt, you have lost no weight, and you are convinced HIIT does not work.

HIIT works. For some people. At some life stages. With specific goals. The mistake is not the protocol. The mistake is choosing a protocol because someone else's story worked, rather than because it matches your body, your schedule, your recovery capacity, and your goals.

Forty-year-olds with desk-heavy careers usually need more low-intensity work and less metabolic battering than they think. Strength training, walking, and one harder session a week often beat four high-intensity sessions stacked on top of work stress, sleep debt, and family load. The body that already runs hot does not need more heat. It needs heavier weight, moved well, with proper rest.

Mistake three: skipping the boring foundations

Ankles. Hips. Thoracic spine. Single-leg balance. Breathing. Posterior chain.

These are the things that determine whether you can squat properly, deadlift properly, lift overhead properly, and whether your body will hold up over decades. They are also the things every forty-something skips because they look easy and they want to get to the "real" training.

Then six months later their lower back tweaks doing something mundane, and they wonder why.

The honest answer: by your forties, the foundations are the real training. The fancy lifts are the dessert. A coach who skips the assessment and just throws you on a programme is a coach who is going to get you injured. We start every new AKFITNESS client with a movement assessment for this exact reason. About that.

Mistake four: training in isolation from the rest of your life

You sleep six hours. You eat lunch at your desk. You drink three coffees before midday. You sit for nine hours, drive home, sit for another two, then come into the studio and expect your body to deadlift like an athlete.

Training is the smallest input. Sleep, nutrition, hydration, posture, and stress dominate the outcome. I have never had a client get serious results on training alone if the other inputs were ignored. I have had plenty of clients get extraordinary results once we tuned even one or two of the others.

This is the whole point of whole-person coaching: the body does not care that you separate "fitness" from "the rest of your life." The body experiences all of it as a single load. Coach the whole picture or accept marginal returns.

What to do instead

None of this means you should be tentative. The forty-year-old body responds to strength training as well as almost any age does. Bone density improves. Posture improves. Energy improves. The performance ceiling is real and yours to reach.

The path is just slightly different from what your twenty-five-year-old self would have done. Warm up properly. Programme intelligently. Build the boring foundations. Respect the load you carry outside the studio. A coach who knows what they are doing makes all four of these automatic.

Train for the next twenty years, not for next month.

Amadu Koroma

Founder and Head Coach at AKFITNESS Studio, Richmond. NPL Victoria Strength & Conditioning Coach for Altona Magic SC. Former Strength Coach at South Melbourne FC, where I helped lead the club to two NPL grand finals. Ten years coaching strength, longevity, and whole-person training in inner-east Melbourne.

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