Carrying Kids, Shopping and Everything Else: Load Smart

There is a whole category of physical effort that nobody counts. You would not call carrying a sleeping four-year-old from the car to the front door a workout. You would not log the walk back from the shops with four bags cutting grooves into your fingers, or the laptop bag you have hauled on the same shoulder every working day for years. Your body counts it, though. And when someone books an appointment with a nagging ache between the shoulder blades, or a low back that only grumbles by Friday, the culprit is very often this uncounted load rather than anything dramatic.

Late October makes it worse in small ways. Heavier coats, wet pavements that make you hurry, dark evenings, and the slow build towards Christmas shopping. Every autumn across Liverpool and Merseyside the same pattern starts arriving in my diary.

The good news is that carrying heavy bags pain is one of the more fixable things I deal with, because almost all of it comes down to four variables you can actually change.

Why carrying hurts: distance, duration, asymmetry, surprise

Your spine and shoulders can tolerate a great deal. What tips a manageable load into a painful one is rarely the number on the label.

Distance. The further a weight sits from your body, the harder your back and shoulders have to work to hold it. A box hugged against your chest and the same box held at arm's length are, as far as your lower back is concerned, entirely different objects. This is simple leverage, and it is the biggest lever you have.

Duration. Holding is more fatiguing than lifting. Pain from carrying usually arrives somewhere in the middle of the walk rather than at the moment you picked things up. The postural muscles tire, technique quietly degrades, and the last hundred metres get done badly.

Asymmetry. One bag, one shoulder, one hip. Your body compensates by side-bending, so the muscles on one side work continuously while the other side does very little.

Surprise. The classic flare-up is lifting something that turned out heavier than it looked. Your body braces for what it expects; when the estimate is wrong, tissue gets loaded before the muscles are ready.

Carrying children

The toddler-on-one-hip position is the most reliably asymmetric load in ordinary life, and parents do it hundreds of times a week without ever thinking of it as lifting.

• Alternate sides on a rule, not on feel. By the time one side feels tired, you have already done the loading. Swap at every road crossing, or every doorway. Make it automatic.
• Carry high and close. A child perched on your hip bone is a lever. A child held against your chest is a rucksack.
• Fix the car seat problem. Reaching into a car at full stretch, with a twist, over a door sill is the worst mechanical situation most parents meet daily. Get one foot inside the door frame, bring the child in to your chest before you stand, and turn your feet rather than your spine.
• Teach them to climb. Older toddlers can get themselves onto the sofa, a step or the boot sill, so you are lifting from waist height rather than from the floor.
• Use a carrier for real distances. A sling or a structured hip carrier spreads the load across both shoulders and your pelvis instead of parking it on one side.

Shopping, and the walk from the car

The instinct to do it all in one trip is understandable and usually a mistake.

Two lighter bags, one in each hand, is far kinder than one heavy bag on one side. A rucksack is kinder still. If you do a big shop weekly, a wheeled trolley is not a concession to age; it is the correct tool, and I recommend them cheerfully to people in their thirties.

Keep bags close to your legs rather than swinging out, put them down properly to open the door rather than balancing everything on one forearm, and take two trips from the car. Two trips costs ninety seconds. A flared back costs a fortnight. If you live somewhere in Liverpool where parking means a street or two away, remember that the walk is the load, not the shop.

And if you are in a flare right now, booking a delivery slot is a perfectly legitimate piece of treatment.

The bag you carry every day

Daily loads matter more than occasional ones, purely through repetition. Two things to do this week.

Empty your bag onto the table and put back only what you genuinely need. Most work bags contain a surprising amount of archaeology.

Then use both straps. A one-strap rucksack is a styling decision your neck is paying for. Set the straps so the bag sits between your shoulder blades rather than sagging down by your hips, and do up the chest strap if it has one.

Technique is not the whole answer. Capacity is

This is where current physiotherapy differs from the old "lift with your legs, not your back" poster in the staff room.

Research consistently shows that lifting technique on its own is a fairly weak predictor of injury. What matters more is whether your body is accustomed to the loads you ask of it. A back that regularly lifts, carries and bends tolerates lifting, carrying and bending. A back that spends five days seated and then carries a Christmas tree does not.

So build the capacity. Twice a week is enough.

• Suitcase carries. Hold one moderately heavy weight in one hand — a kettlebell, a full watering can, a loaded shopping bag — and walk thirty to forty metres without letting yourself lean towards it. Swap sides. Three lengths each side. This trains precisely the thing you find hard.
• Sit-to-stands. From a dining chair, no hands, ten to fifteen repetitions, two or three sets. Unglamorous, and it works.
• Band rows. A resistance band anchored in a door, elbows pulling back towards your ribs, ten to twelve repetitions, two or three sets, for the muscles that hold your shoulder blades steady.

Stop on sharp pain. A general working ache that settles within a day is fine and expected.

When to get it looked at

Most carrying-related pain settles within a couple of weeks with sensible loading and a bit of patience. Book an assessment if it is not improving after that, or if the same flare keeps returning every few months. Recurrence is usually a capacity problem, and it responds well to a proper programme.

If pain travels below the knee, or you are dropping things and losing grip strength, have it assessed rather than working around it.

Contact your GP urgently or attend A&E if you have back pain alongside numbness around the groin or saddle area, loss of bladder or bowel control, sudden significant weakness in an arm or leg, unexplained weight loss, fever, or severe unrelenting pain at night. Those need medical assessment, not exercise advice.

You can read more about how I assess back pain, or about physiotherapy across Liverpool more generally. For parents especially, a home visit is often easier than arranging childcare to get to a clinic, and it lets me see the actual car seat, the actual stairs and the actual bag rather than a description of them.

If carrying is making your week harder than it needs to be, book at /portal/book or call me on +44 7553 370300. Home visits across Liverpool and Merseyside are £90 a session, online consultations £60, evenings Monday to Friday, plus Saturday and Sunday daytimes, and you do not need a GP referral.