22/07/2026
Hi!
If you read my post from last week, I talked about being careful about who you take exercise advice from online. Again, just because someone has a fit body, a big following, or confident delivery does not mean they understand exercise mechanics, joint limitations, or how to train people safely and effectively. This brings me to today’s topic. If you have ever worked with me and/or been in one of my programs, you know that I am all about workout safety and effectiveness through proper form. This is particularly important for women over 40.
If you've ever watched someone swing a weight up using their whole body, snap through a rep at top speed, or rush through a movement just to get more reps done, you've seen momentum in action.
It looks impressive. It can even feel like a "good workout" in the moment.
But underneath, momentum is one of the most common reasons people train hard and still see very little result, and it's also a fast track to aches, strains, and injuries, especially for women over 40 who are newer to lifting.
(Now, let me be clear here, I am talking about day to day workouts and not experienced Olympic lifting or power-based movements like push-presses).
Why momentum feels productive but isn't:
When you use momentum, the weight is being moved by speed, swing, and other body parts instead of by the muscle you're actually trying to train.
That means the target muscle is doing less work, not more.
So instead of giving your muscle the tension it needs to get stronger, firmer, and more shaped, you're mostly moving weight from A to B.
The rep may "count" on paper, but the muscle barely participated.
This is why so many people do hours of exercises and still feel like nothing is changing. They are working hard, they're just not working the right thing.
Why it becomes riskier with age:
For women over 40, and especially through perimenopause and menopause, a few important things shift:
- tendons and connective tissue become less forgiving
- joint stability can decrease
- recovery from strain tends to take longer
- hormonal changes affect muscle quality and tissue resilience
When you add momentum to that picture, you're asking joints, ligaments, and tendons to absorb forces they're not prepared for, often at awkward angles, often repeatedly, often without the muscle control needed to protect them.
That's how knees, shoulders, lower backs, and hips end up sore, irritated, or injured, not from lifting itself, but from lifting badly.
Why beginners are especially vulnerable:
If you're new to strength training, your muscles are still learning how to fire efficiently.
That means:
- control is limited
- stabilizing muscles are weaker
- form tends to break down under fatigue
- the nervous system isn't yet skilled at slowing the weight down
Add momentum to that mix and you're essentially throwing weight at joints that don't yet have the muscle strength or control to handle it safely.
It's not that beginners shouldn't lift, they absolutely should. It's that beginners benefit most from slow, controlled, intentional reps that teach the muscle what to do and protect the joints while they learn.
What good control actually looks like:
A well-executed rep usually has these qualities:
> a controlled lowering phase — the weight isn't dropping, you're lowering it
> a brief pause or controlled turnaround — no bouncing or swinging at the bottom
> a smooth, deliberate lift — powered by the target muscle, not by jerking or heaving
> full range of motion you actually own — not a partial rep forced by speed
> tension you can feel in the right place — the muscle you're trying to train is doing the work
The weight should move because the muscle is moving it, not because your body is throwing it.
A simple way to check yourself:
If you ever wonder whether you're using too much momentum, ask:
Could I pause for a second at the hardest part of the rep?
Am I using my lower back, hips, or a swing to get the weight up?
Is the muscle I'm trying to train actually doing most of the work?
Could I slow this down and still complete the rep with good form?
If the answer is "no," the fix is usually simple: lighten the weight, slow the rep down, and let the muscle do its job.
The bottom line…
Momentum makes a workout feel harder, but it usually makes it less effective and more risky, especially for women over 40 whose joints and tissues need more respect, not more chaos.
Control is not weakness.
Control is what allows the muscle to work, the joints to stay safe, and the results to actually show up.
If you're going to put the time in, make every rep count, and let the muscle, not the momentum, do the work.
If you want more information about my group program, you can learn more here:
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