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#fitness

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Mike ChenOct 14 · 2 min read

Why “waterproof Bluetooth” still dies mid-lap — and three ways people actually listen while swimming

If you’ve ever bought “waterproof Bluetooth earbuds” for the pool and lost the music the second your head went under, you’re not crazy — and it usually isn’t a fake listing. Water absorbs 2.4 GHz Blue

poolside-notes.hashnode.dev

Famitha M ASep 28 · 11 min read

How to Build a Fitness Wearable App with React Native

Most "build a fitness app in React Native" tutorials stop at the easy part: a nice UI, a workout list, a chart. The interesting engineering starts once your phone has to talk to a device that isn't th

fami-blog.hashnode.dev

Waqas SolangiAug 20 · 1 min read

How I Built an Ideal Weight, BMI & Body Fat Calculator in Vanilla JavaScript

Calculating body metrics like Ideal Body Weight (IBW), Body Mass Index (BMI), and body fat percentage requires precise client-side logic. I built a lightweight, fully responsive health metrics suite u

globaltoolsbox.hashnode.dev

TheapplediscussionAug 19 · 3 min read

Apple Watch Move Goal vs Calorie Goal — They're Not the Same Thing

Most Apple Watch users treat the Move Goal and calorie goal as interchangeable. They're not. Mixing them up produces goals that are trivially easy, unrealistically hard, or disconnected from actual fi

theapplediscussion.hashnode.dev

DozoAug 17 · 4 min read

I Built a Bowl Builder Tool for Nawtch, and the Save Button Was Harder Than It Sounds

Wanted a tool anyone could use to build a meal-prep style bowl or plate and get real calorie and macro numbers back, with weight adjustments in ounces or grams depending on what you actually use. If y

nawtch.hashnode.dev

TheapplediscussionAug 17 · 3 min read

Apple Watch Calorie Burn Calculator — How Many Calories Does Your Workout Actually Burn?

Apple Watch gives you a calorie burn figure at the end of every workout. Most users accept that number without understanding what it's calculating or how accurate it actually is. Here's what the algor

theapplediscussion.hashnode.dev

TheapplediscussionAug 15 · 2 min read

Apple Watch Steps, Pace & Distance — Why the Numbers Don't Always Line Up

Apple Watch tracks steps, pace, and distance simultaneously. Most users assume these three numbers flow directly from each other — steps produce distance, distance produces pace. The reality is more c

theapplediscussion.hashnode.dev

TheapplediscussionAug 13 · 3 min read

Apple Watch VO2 Max Explained — What It Measures, Heart Rate Zones, and Where the Estimate Falls Short

VO2 max is one of the most clinically validated markers of cardiovascular fitness. It's also one of the most misunderstood numbers on Apple Watch — partly because the metric itself is solid but the wr

theapplediscussion.hashnode.dev

TheapplediscussionAug 9 · 3 min read

Apple Watch Fitness Age — The Longevity Metric Most Users Ignore

Fitness age is one of Apple Watch's least-discussed metrics. It's also one of the most scientifically grounded — and unlike most health numbers, this one is directly modifiable with the right training

theapplediscussion.hashnode.dev

DozoAug 4 · 5 min read

I built a free fitness tracker with no backend and no account — here's what I learned

A few months ago I got tired of every calorie tracker either paywalling basic features or demanding I create an account just to log a banana. So I built Nawtch — a free fitness tracker that runs entir

nawtch.hashnode.dev

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Why “waterproof Bluetooth” still dies mid-lap — and three ways people actually listen while swimming

How to Build a Fitness Wearable App with React Native

How I Built an Ideal Weight, BMI & Body Fat Calculator in Vanilla JavaScript

Apple Watch Move Goal vs Calorie Goal — They're Not the Same Thing

I Built a Bowl Builder Tool for Nawtch, and the Save Button Was Harder Than It Sounds

Apple Watch Calorie Burn Calculator — How Many Calories Does Your Workout Actually Burn?

Apple Watch Steps, Pace & Distance — Why the Numbers Don't Always Line Up

Apple Watch VO2 Max Explained — What It Measures, Heart Rate Zones, and Where the Estimate Falls Short

Apple Watch Fitness Age — The Longevity Metric Most Users Ignore

I built a free fitness tracker with no backend and no account — here's what I learned