We'll spoil the ending: It's eat, sleep, and move. 

We know. After the mushroom coffee, the cortisol supplements, the seed cycling, the cold plunges and the nine-step morning routine that begins at 5am, an answer like go to bed earlier feels like a con. 

It works, tho. And our twenties are a good time to hear it, because one or two of these count for more right now than they ever will again. So here's what each one means in practice, and then two more that belong on the list even though neither of them behaves like a habit.

Exercise

About 20 to 45 minutes a day, and it doesn't have to look like a workout, which is lucky, because some of us are not going to do a workout every day. Brisk walking counts, so does cycling, so does dancing around the kitchen while cooking dinner.

Then two days a week of strength work. The US guidelines describe it with beautiful bluntness as lifting weights or doing push-ups, so there's nothing to decode. Resistance bands, squats, two dumbbells behind the sofa, hauling the heavy shopping up the stairs, it all counts too.

This is what gives the strength some urgency. Bones get stronger by being made to push back against something and our bone mass peaks by our mid-to-late twenties, which is the strongest and densest our skeleton is ever going to be. Everything after that is looking after what we built – of everything on this list, this is the one with a window on it.

Sleep

Seven hours or more a night, which is where the American sleep societies landed for adults. With some research indicating that women require more sleep on average than men in general. Regularly, too, so nine hours on Sunday doesn't buy back five on Wednesday. 

This is the one we treat as negotiable, mostly because it's the only part of the day that feels like it’s ours to spend. It's also the one quietly deciding how the other two go. On a well-rested day, we move and eat roughly as we’re meant to. On a five-hour sleep day, dinner is whatever's nearest the sofa and the gym becomes a problem for a future version of us who will, unfortunately, also be tired.

Food

Nobody is short of instructions here. Depending on the week, seed oils are poison, protein has to hit thirty grams before nine, or gluten and dairy are wrecking our hormones, each rule certain of itself and contradicted by the next post down.

The official version is duller and much shorter. The US dietary guidelines were rewritten this January (2026), and they measure a day in servings. Here's the translation:

• Vegetables, 3 a day – A cup raw or cooked, or two cups of leaves.

• Fruit, 2 – A cup fresh, half a cup dried.

• Whole grains, 2 to 4 – Half a cup of cooked oats or rice, a slice of bread, a tortilla.

• Protein, 3 to 4 – Three ounces of meat or fish, an egg, half a cup of beans, an ounce of nuts.

• Dairy, 3 – A cup of milk, three quarters of a cup of yogurt, an ounce of cheese.

• Plus a few teaspoons of olive oil or butter across the day. That's a 2,000-calorie pattern and it shifts with our age, height and activity, so it's a shape rather than a rulebook.

The only firm instruction is to cut right back on highly processed food, refined carbs and added sugar. 

One thing here is specific to women: iron. From 19 to 50, women need 18 mg a day, and up to 5% of women of childbearing age develop iron-deficiency anemia from heavy periods. It's in lean beef, beans, spinach, tofu and fortified cereal, and vitamin C helps us absorb it. If tiredness has become our factory setting, that's one blood test from an answer rather than a personality trait.

Stress

This is where a fourth habit is supposed to go, and there isn't one. Stress has more products aimed at it than anything else here and the least to show for them, and, irritatingly, the three things above are most of the answer. Rest doesn't have to be earned with a productive week first, and when it's the first thing cut, it tends to take the sleeping and the eating down with it.

The yearly appointment

The other one that doesn't behave like a habit. Everything above is something we do, and this is something we book, which makes it easier and somehow also harder. No routine finds endometriosis, PMOS, or a thyroid running slow, and all of those are ordinary things to be walking around with in our twenties without knowing it. A yearly appointment is where they surface.

Liking things handled early is the same instinct FLORA runs on. Fertility coverage set up in our twenties and held until 45, sitting quietly in the background whether we ever need it or not. You can start here.

So move most days, two strength sessions, seven hours, eat enough, and book one appointment a year. Annoying, isn't it?