标签：#health

Don't pay full price—snag one of these tasty Prime Day tech deals on some of our favorite WIRED-tested gadgets.

It’s been hot in London this week. Really hot. A dangerous heat wave has hit Western Europe. Yesterday, the UK recorded its highest ever June temperature at 36.1 °C (about 97 °F). But as the weather app on my phone confirmed, it felt like 39 °C. It’s frightening that we are seeing such temperatures in…

I've compiled a list of the best fitness tech deals this Amazon Prime Day, including smartwatches, walking pads, and recovery gear. You can thank me later.

For three months, I weighed myself every morning and took body measurements every Sunday. I used a caliper, a tape measure, and a scale that probably lies to me about hydration levels. The goal wasn't to get ripped. It was to understand whether any of these measurements actually mean something day to day. The Problem With Most Health Calculators Most body fat calculators fall into one of two camps: Too simple — plug in height and weight, get a BMI number that tells you nothing about your actual composition. Too complicated — requires measurements you need a degree to take correctly, plus an email signup and a paid subscription. Neither is useful for someone who just wants to know "am I making progress?" Building Something Practical I put together a calculator that uses the Navy Method — it takes neck, waist, and hip measurements and estimates body fat percentage. The math has been around since the 80s and correlates reasonably well with DEXA scans for most people: function navyBodyFat ( gender , neck , waist , hip , height ) { if ( gender === ' male ' ) { return 86.010 * Math . log10 ( waist - neck ) - 70.041 * Math . log10 ( height ) + 36.76 } return 163.205 * Math . log10 ( waist + hip - neck ) - 97.684 * Math . log10 ( height ) - 78.387 } The inputs are simple enough that anyone can take them with a tape measure. The output gives you a ballpark number that's consistent enough to track trends over time. What 90 Days of Data Taught Me Three things stood out: Daily weight is useless; weekly trend is everything. My weight would swing 2-3 pounds daily due to water, food, and sleep. The weekly moving average was the only signal worth watching. Body fat percentage changes slowly. Like, frustratingly slowly. In 90 days of consistent training, I moved maybe 2%. But that's real — if a calculator tells you you dropped 5% body fat in a month, it's broken. Consistency beats precision. Taking measurements at the same time, under the same conditions, with the same method matter

Don't pay full price—snag one of these tasty Prime Day tech deals on some of our favorite WIRED-tested gadgets.

I found the best protein powders that won’t make your morning smoothie taste like drywall.

We still don't know why RFK Jr. overruled CDC expert to order strict quarantines.

Branches received exceptions to Hegseth's policy that made the shot optional.

The common cold comes for us all—often more than once a year. And there is no way to prevent it. The best you can do is take vitamin C and stay away from people with the sniffles. Now, the payment company Stripe, founded by brothers Patrick and John Collison, says it will fund a new…

These goggles have an excellent display, solid metric tracking, and an open-water “SwimStraight” feature. But the real smart tech requires a subscription.

Don't pay full price—snag one of these tasty Prime Day tech deals on some of our favorite WIRED-tested gadgets.

The biodegradable material can help improve healing after surgery—or an avocado-related accident.

Skip the pricey upgrade and save $100+ on the Oura Ring 4.

Public notice of a single "compassionate use" case is odd in every way.

Google Health Coach seems to think I'm on the verge of physical collapse. My sleep is not where it needs to be, hence my unimpressive readiness score. My heart rate variability, a measure of how recovered I am, is below baseline. I'm spending too much time in a hot, humid environment, it says, reminding me […]

I've compiled a list of the best fitness tech deals this Amazon Prime Day, including smartwatches, walking pads, and recovery gear. You can thank me later.

Coherence Neuro has started testing a brain-computer interface that could one day use electrical stimulation to prevent tumors from growing.

Don't pay full price—snag one of these tasty Prime Day tech deals on some of our favorite WIRED-tested gadgets.

He had retinal tears and bruises from squishing his eyeballs with the gun.

Seven months after introducing its $119.98 Ultra BodyScan smart scale, Wyze announced a cheaper $79.98 alternative available today that makes a few compromises to shave $40 off the price. There's no Wi-Fi, but you can sync the BodyScan's measurements to Apple Health and Google Fit by connecting to the Wyze mobile app over Bluetooth. And […]