The short version

The three free health habits are: get morning sunlight and dim evening screens to lock your circadian rhythm, eat protein and vegetables before carbs, and take the stairs instead of the lift.

Finnish biohacker Teemu Arina, co-author of The Biohacker’s Handbook, named exactly these three when Monaco Life asked him what anyone could start doing today, after his talk at the Hololife Longevity Cote d’Azur Summit in Nice. His logic: “You can’t outsource your health and say something is going to fix me when I’m broken.” All three cost nothing, and all three have genuine research behind them — which is exactly why free health habits deserve a serious look. Here is the evidence, habit by habit.

Habit 1: Anchor your day with morning light

Arina’s first prescription is circadian alignment: “Wake up with the sun, reduce blue light in the evening (devices). That supports your hormones, your blood sugar regulation, all of it.”

The science backs him. Light hitting the eyes in the first hour after waking is the strongest signal that sets the body’s master clock, triggering the morning cortisol pulse and starting the melatonin timer that makes you sleepy roughly 16 hours later.

Stanford neuroscientist Andrew Huberman describes 10-plus minutes of outdoor light within 30 to 60 minutes of waking as the single most effective circadian tool, pointing to Ken Wright’s camping experiments, where a week of natural light alone shifted late sleepers’ rhythms without any other intervention. It is the simplest of these free health habits — and arguably the most powerful.

Practical version: step outside for 10 minutes after waking, no sunglasses, and don’t stare directly at the sun. On the evening side, dim overheads and screens in the last hour before bed. This pairs with consistent sleep timing, which matters far more than any single late night. If your plan is to fix everything with a weekend lie-in, read our sleep debt guide first.

Habit 2: Eat your protein first, carbs last

Arina’s second move targets meal order: “When you go to a restaurant and they give you bread, start with the protein and salad first. The bread will have much less of an effect afterwards. It’s not about eating less, it’s about timing.”

Of all free health habits, this one has one of the cleanest studies in nutrition. In a 2015 trial at Weill Cornell, people with type 2 diabetes ate the same meal in different orders.

Starting with protein and vegetables before the carbs cut post-meal blood sugar spikes by about half compared with eating the bread first, and insulin levels ran significantly lower too (Shukla et al., Diabetes Care, 2015). A longer follow-up in Pisa found that four months of carbs-last eating trimmed average HbA1c by about 0.3%.

Practical version: open every meal with vegetables or protein, and leave the bread, rice or pasta for the second half of the plate. No diet change required. Just sequence.

Habit 3: Take the stairs

Arina’s third habit is almost comically ordinary: “Take the stairs. Walk. That’s the Mediterranean lifestyle our ancestors were having.” Movement, not memberships.

The evidence is stronger than the modesty suggests. A September 2026 systematic review and meta-analysis from the University of East Anglia’s Norwich Medical School pooled nine studies covering more than 480,000 adults and found regular stair climbing associated with a 39% lower risk of cardiovascular death.

Around six flights a day showed the greatest benefit, but the researchers stressed that even small changes had a measurable impact. Lead researcher Sophie Paddock put it plainly: if you have the choice of stairs or lift, take the stairs. Few free health habits deliver this much for this little effort.

Practical version: default to stairs for anything under four floors, and count every flight. Small, repeatable, and free.

Ready to start? These free health habits fit into an ordinary day without rearranging it:

Your Free Health Habits Starter Checklist

• Tomorrow morning: take your coffee outside, or walk 10 minutes before touching screens.
• Tomorrow’s lunch: salad or protein first, bread or rice last.
• This week: stairs for every trip under four floors.
• This week: dim lights and screens 60 minutes before bed.
• Weekend: lock your wake time within one hour of your weekday time.
• Track for 14 days: energy at 3 p.m., sleep quality, the post-lunch slump. Small notes, no app needed.

FAQ

Do free health habits actually work, or do you need the expensive gadgets?

They work on the biggest levers: circadian timing, glucose control, and daily movement. Gadgets measure; habits do the moving. Wearables can help you notice patterns, but none of the evidence above required one.

Which of the three habits should I start with?

Start with morning light. It improves sleep quality fastest, and better sleep makes the other two easier. Food order is the second easiest start because it changes no shopping and no recipes, just sequence.

How soon will I notice anything?

Sleep and daytime alertness often shift within days of consistent morning light. The glucose effect of meal order shows up at the very next meal. Stair-climbing fitness builds over weeks. Give all three a fortnight before judging.

The takeaway: you do not need a smart ring to begin. Pick one of these free health habits tomorrow, give it a fortnight, and let the basics do the work.

This article is for information only and is not medical advice.

Sources: Monaco Life’s biohacker interview · SciTechDaily: Taking the Stairs Could Cut Your Risk of Heart-Related Death by 39% · Diabetes Self-Management: Eat Carbs Last to Reduce Meal Blood Sugar Spikes · The SportsRush: Dr. Andrew Huberman Reveals the True Powers of Viewing Sunlight