Carb Cycling: Does It Actually Work? A CGM Reality Check
Dr. Mukul Mittal walks you through carb cycling — what the evidence shows for endurance athletes, why it rarely helps general dieters, and what a CGM …
May 29, 2026
Parasympathetic vs Sympathetic: Activate Your Body's "Rest & Digest" Mode
Dr. Mukul Mittal, Medical Director at Ultrahuman, walks you through how to look at the parasympathetic ("rest and digest") and sympathetic ("fight or …
May 29, 2026
What Does the Luteal Phase Feel Like? A Guide to Symptoms, Mood, and Training
We look at what the luteal phase actually feels like. Dr. Mukul Mittal, Medical Director at Ultrahuman, walks through symptoms, mood, sleep changes, …
May 28, 2026
A1C Calculator: What Your Number Really Means
What does your A1C number actually mean? Dr. Mukul Mittal, Medical Director at Ultrahuman, walks through the A1C-to-glucose conversion chart, where …
May 28, 2026
Sleeping Heart Rate by Age: 532,000 Ring Users' Nightly Data Compared
What's a typical sleeping heart rate by age? Ultrahuman analyzed 532,000 Ring AIR users across 78 million nights — and the result challenges a popular …
May 28, 2026
Why Is My Period Late? Eight Non-Pregnancy Reasons
This article was medically reviewed by Kate Davies RN, BSc (Hons), FP Cert , Vice President Medical Women’s Health & Longevity at Ultrahuman . A …
May 27, 2026
Is Chick-fil-A Healthy? A Nutrition Guide to Every Menu Item
Is Chick-fil-A healthy? Most online guides focus on calorie count alone, but Mukul Mittal, Medical Director at Ultrahuman, walks through every menu …
May 27, 2026
Glutathione Benefits: The Master Antioxidant Explained
Glutathione benefits are real — but most oral supplements aren't. Mukul Mittal, Medical Director at Ultrahuman, walks through the evidence-backed …
May 27, 2026
Period Symptoms — What's Normal and What's Concerning
Most period symptoms are normal - but some signal an underlying condition. Mukul Mittal, Medical Director at Ultrahuman, walks through what's typical, …
May 26, 2026
How to Lower A1C Naturally
Want to lower your A1C? Mukul Mittal, Medical Director at Ultrahuman, walks through the diet, exercise, weight, and sleep levers backed by clinical …
May 26, 2026
What Is Invert Sugar? How It Affects Blood Glucose
If you've spotted "invert sugar" on an ingredient label and wondered if it's worse than regular sugar, Ultrahuman Medical Director Mukul Mittal …
May 26, 2026
Does Red Light Therapy Work? What the Evidence Supports
Does red light therapy actually work? Ultrahuman Medical Director Mukul Mittal walks through what the trial evidence supports — and which claims have …
May 25, 2026
HRV by Age and Gender: What's Normal for Men vs Women
Heart-rate variability (HRV) is a measure of the small beat-to-beat variation in your resting heart rate, captured overnight by wearables like the …
May 25, 2026
When Does Perimenopause Start? Average Age and Early Signs
When does perimenopause start? Ultrahuman Medical Director Mukul Mittal explains the average age, the normal range, and the early signs that show up …
May 25, 2026
How Low Progesterone Shows Up in Your Sleep, Mood, and HRV
Low progesterone shows up in sleep, mood, and cycle changes — and your wearable can spot the signals. We reveal what to look for and when to test.
May 23, 2026
Perimenopause Tests: Reliability Issues and Accuracy Explained
Can a blood test tell you you're in perimenopause? Ultrahuman Medical Director Mukul Mittal walks through what hormone tests actually measure — and …
May 23, 2026
Implantation Bleeding vs. Your Period — How to Tell the Difference
Spotting before your period? Ultrahuman Medical Director Mukul Mittal walks through the differences between implantation bleeding and a real period — …
May 23, 2026
How to Increase Estrogen: Why It's Not What You Eat, But How Much
The relationship between boosting estrogen and food is often misunderstood. We break down what you need to know
May 22, 2026
Low histamine diet explained and the triggers to be aware of
We explain how a low histamine diet works and the symptoms to look out for
May 22, 2026
Discharge Before Your Period: A Complete Guide to What's Normal
Discharge before your period is normal – but changes in colour or texture can be a sign something's up. Mukul Mittal, Medical Director at Ultrahuman, …
May 22, 2026
Why Breasts May Be Sore or Tender in Perimenopause
Ultrahuman Medical Director Mukul Mittal explains why sore breasts are common during perimenopause - and examines the data
May 22, 2026
Cramping But No Period? Here's What It Could Mean
If you're experiencing cramping without a period, Ultrahuman Medical Director Mukul Mittal explains common reasons
May 21, 2026
Sucrose explained: The key differences with 'added sugar' and how it affects your body
Naturally occurring sucrose isn't bad in itself – but when refined and added to food it's linked to a host of poor health outcomes
May 20, 2026
Is Chipotle healthy? How to create the healthiest combo (based on our CGM data)
How to create the healthiest Chipotle order – based on Ultrahuman glucose data
May 20, 2026