I have recently been called an “old guy” by friends because of my tendency to go to bed early and my newfound interest in puzzles. I’ve been feigning some annoyance, but honestly? That’s fine by me. According to the good folks at The Healthy, those supposedly old-person habits may also be the ones that help us live both better and longer. Check out the full story here.
— J.D., Editor
♔
Personal Growth
Heat Waves May Age Your Body Faster, New Study Suggests
A.C./Unsplash
Heating Up: If you’ve been feeling anxious about heatwaves recently, we’re sorry to report that a new study suggests that heatwaves may age your body faster.
The Study: Repeated heat-wave exposure may accelerate biological aging, potentially by disrupting metabolism. Researchers analyzed data from 2,318 adults in China, with an average age of 58.7, using health measurements collected from the China Health and Retirement Longitudinal Study. They compared participants’ exposure to heat waves with changes in their biological age, using biomarkers like cholesterol and HbA1c.
The more heat waves people experienced, the greater their biological age acceleration. Under the study’s definition — a heat wave lasting at least four days with temperatures above the local 97.5th percentile — each additional heat-wave event was associated with about six months of biological aging. This echoes the findings in an earlier study published in Nature Climate Change in 2025, which followed 24,922 adults in Taiwan from 2008 to 2022.
Takeaway: It’s hot out there, and that might be bad for our bodies. It’s possible that “heat training” can help us adapt to increasingly severe weather, but it’s also important to take steps to stay cool and hydrated each day.
Keep In Mind: Other factors, like body size and geographic location, also influenced the rate of biological aging, so heat may not be the only thing to blame.
Altra’s Zero to Low Drop design keeps the heel and forefoot closer to the same level, aiming to support a more natural gait and posture while encouraging the feet and ankles to stay active. It’s not about giving up cushioning. It’s about choosing a shoe that lets your body move more like itself.
Thank you for supporting our sponsors! They help us keep All Healthy free.
✿
Beauty
What “Biotech Beauty” Actually Means
Daiga Ellaby/Unsplash
The Trend: Ingredients once found only in dermatology offices and hospital wound care are showing up in serums and sheet masks, sold under the label “biotech beauty.” These products often use fermentation or lab-grown plant cells instead of extracting an ingredient directly from a plant or synthesizing it from scratch. So what’s the point? It appeals to consumers who want more control and consistency after years of natural beauty trends that delivered inconsistent performance because ingredient quality varies with weather and harvest conditions.
What People Are Saying: Fans in the category cite real-world medical use cases. PDRN (the DNA fragment behind so-called salmon facials) has decades of approved use treating wounds in Italy and South Korea. Spicules (tiny structures that create microscopic openings in skin) are borrowed from marine biology to help other ingredients absorb more deeply. But research on these ingredients in everyday, undamaged skin remains thin.
What to Know: Biotech ingredients don’t require premarket testing, so their presence on a shelf isn’t proof of safety or effectiveness. So check labels for actual ingredient names (sodium DNA or hydrolyzed sponge are two of the most popular) rather than simply trusting the marketing on the package. And always patch test anything new to your skin.
✾
Nutrition
Here’s What Actually Happens to Fat When You Lose It
All Healthy Design Studio
You Should Know: A new breathalyzer-style device can tell when your body starts burning fat (whether you’re dieting or mid-workout) by reading a byproduct in your breath. Researchers designed it to track fat metabolism the way people with diabetes track blood sugar, and it’s already being tested for epilepsy care and for monitoring weight-loss drugs.
Going Deeper: So how does the device work exactly? Well, body fat is stored as triglycerides, and you burn it by consuming fewer calories than you expend. That process produces byproducts such as water (which leaves through sweat, urine, and other fluids) and carbon dioxide (which leaves through your lungs with every exhale). Exercise speeds up the whole process because your body needs more oxygen to keep moving, which means more carbon dioxide is released.
The Takeaway: Cutting calories (through appetite-reducing medications like GLP-1s or sheer willpower) and moving more push your body to break down fat for energy, which drives fat loss. Sleep matters too, since research shows that people who get less sleep lose noticeably less fat than those who get a full night’s rest.
Bottom Line: Eating less and moving more still trigger fat burning, but now there’s a way to actually confirm it’s happening instead of just trusting the process.
These homemade breakfast bars strike a satisfying balance between crunchy and chewy, with toasted oats, dried fruit, chia and hemp seeds, and a swirl of fruit preserves in every bite. The key step is to toast the oats with brown sugar and honey first, which gives them a lightly caramelized, butterscotch-like flavor. A blend of dates and creamy nut or seed butter binds everything together, while the seeds add plenty of texture. After a quick mix, simply press the mixture into a pan and let it chill overnight until firm.
By clicking, you are agreeing to receive a daily recipe from Better Plates.
☞
This, Not That
Modest Movement
THIS
NOT THAT
Alexander Lunyov/Unsplash, Getty/Unsplash
This: Make movement smaller Not That: Skipping it because you can’t do a full workout
A 10-minute walk, a few sets of squats, or some stretching while dinner cooks still counts. Not every bit of movement needs to be optimized, tracked, or impressive. On busy days, “something” is a very respectable plan.
✲
Sponsored
What Your Tongue May Be Telling You
Noriko, a new experience from Apothékary, brings an ancient tongue-reading tradition into a simple modern ritual. Take a photo, answer a few questions, and receive a personalized wellness reading with herbal and lifestyle recommendations. It takes about a minute and is designed as a starting point for understanding what your body may need—not a medical diagnosis.
Thank you for supporting our sponsors! They help us keep All Healthy free.
❦
HEALTHY HABIT
Make the Last Five Minutes Easier
Whether you’re walking, lifting, cleaning, or working, don’t end every effort in a frantic sprint. Use the last few minutes to slow down, cool down, stretch, or reset. Finishing gently can make the whole habit feel more repeatable tomorrow.
★
Final Thought
Before I can tell my life what I want to do with it, I must listen to my life telling me who I am.”
