Protein Is the One You’re Probably Missing

This post is part of a 5-step series —

start here if you're new.

Last week we swapped the word diet for the word fuel, and I promised we'd get specific. So here's the single nutrient that makes the biggest difference for a woman over 40 — and the one most of us are quietly running short on: protein.

If you take one practical thing from all of Step 4, let it be this one.

Why protein, and why now

Protein is the raw material your body rebuilds itself from. Every time you ask your muscles to work — every squat, every carried bag, every Pilates session — you create a small demand for repair. Protein is what answers that demand. Without enough of it, you can do all the training in the world and still slowly lose ground.

This matters more after 40 for two reasons. First, we lose muscle more easily as we age, so the demand for building material goes up. Second, our bodies actually get a little less efficient at using the protein we eat — so we need a bit more of it, not less, to get the same result. Eat too little and your body quietly borrows from your own muscle to cover its needs. That's the opposite of what we're working for.

Protein also has a lovely side effect: it's the most filling thing you can eat. It steadies your energy and quiets the mid-afternoon hunt for snacks. So this isn't about eating more overall — it's about the plate keeping you satisfied for longer.

How much, without turning it into math

You don't need to weigh anything or track grams to get this right. A simple, honest target: aim for a palm-sized serving of protein at every meal. Your palm, not mine — it scales to your body.

Three meals, three palms. That one habit gets most women most of the way there. If you're training hard or you're older, lean toward a little more rather than a little less. That's genuinely all the precision most people need.

Where to actually get it

Protein isn't one food, it's a category, and it's more flexible than people think. Eggs, chicken, fish, and lean meats. Greek yogurt and cottage cheese. Beans, lentils, tofu, and tempeh. A scoop of a simple protein powder in a smoothie when a real meal isn't happening.

Breakfast is where most of us fall short — toast, coffee, a rushed something. If you fix one meal, fix that one. A couple of eggs, or yogurt with fruit, front-loads your protein and changes how the whole day feels.

Don't forget the plants

Protein is the anchor, but it doesn't work alone. Keep building around it with the vegetables, fruit, and whole foods we talked about last week — that's where your fiber and most of your micronutrients live. Protein plus plants, most of the time. That's the whole game.

Try this

Look at your usual breakfast tomorrow and ask one question: where's the protein? If the honest answer is nowhere, add one palm-sized source — eggs, yogurt, cottage cheese, whatever you'll actually eat.

Do only that, every morning, and you'll likely feel steadier by lunch within a week. One meal, one small change, carried forward.

Next Thursday we begin the final step — Step 5, Recovery. Because breath, movement, strength, and fuel all cash in at the same place: rest. And it's the one almost everyone skips.

Love, P.

Educational content — not a substitute for medical care