Is walking enough exercise?

It depends what you want it to be enough for. For living longer, walking is closer to enough than most people believe. For holding on to your muscle, it is not, and the gap between those two answers is where a great many people over sixty get into trouble.

The living-longer part first. A 2022 analysis pooled fifteen studies that had put step counters on 47,471 adults and followed them for years. More steps went with lower mortality, steeply at first and then flattening: the benefit leveled off around six to eight thousand steps a day for people over sixty, and eight to ten thousand for younger adults. Walking pace added little once the count was in. Those are observational studies, and people who walk more differ in other ways, but the pattern is consistent and the dose is modest. You do not need ten thousand.

On the LP3 plate walking has a specific job. Lifting builds the muscle; walking does the quiet work on the energy side, and it does it without costing you recovery, which is what makes it different from adding more hard cardio. Whatever your step count is now, add a couple of thousand and hold that for a few weeks before adding more. Attach it to something you already do: a walk after dinner, parking further away, a phone call taken on your feet. The number matters far less than its being the same most days.

Now the part walking does not do. Muscle grows in response to load, and walking does not load it. It will keep your legs working; it will not put muscle back on them once it has started to go, and after sixty it has started to go in almost everyone. That loss has a name, sarcopenia, and I watched it for forty years turn into a walker, then a fall, then a broken hip.

The evidence that lifting reverses it late in life is unusually good. In the classic trial, a hundred nursing-home residents with an average age of eighty-seven did ten weeks of resistance training. Their muscle strength rose by more than a hundred percent, their walking speed improved, and they climbed stairs better. A nutritional supplement given without the training did nothing. Muscle responds to real demand at any age.

The minimum I ask for is three sessions a week, full body, about forty-five minutes each, plus the daily walk. Three full-body sessions beat five specialized ones for almost everyone who is not already advanced, and missing one costs you a third of a week rather than a whole body part. After sixty, three things change and none of them is that you should lift lighter: recovery takes longer, so never train on consecutive days; technique matters more, which is the best argument for a few sessions with a coach at the start; and the loading still has to be real. A lifetime of pink dumbbells is the commonest mistake in older trainees. If you have a cardiac history, orthopedic hardware or uncontrolled blood pressure, clear it with the physician who manages that first.

Put together, the research tells me that walking, lifting and enough protein are three legs of one stool. Chapter eight of The LP3 Diet is the training, and it is shorter than you would think.