Are Smart Rings Accurate Enough to Guide Health Decisions?
Smart rings can track overnight pulse and broad sleep patterns, while readiness and stress scores remain estimates. Use trends before changing a routine.
David Greene
David Greene is the Journal's director of content & strategy. He writes on men’s health, mobility, and performance, drawing from years of experience in strength training and physical conditioning. He has worked with individuals across a range of fitness levels, focusing on building sustainable routines that support long-term health. His work explores how movement, recovery, and daily habits impact overall well-being. He is also interested in the growing role of technology in personal health.
Why Men Are Less Likely to Seek Care — and How That’s Slowly Changing
Work, cost, trust, fear, and cultural expectations all shape men’s use of preventive care. Better access and better clinical encounters are beginning to change the pattern.
Wearables, HRV, and the Quantified Self: How Much Data Is Too Much?
Wearable data can reveal useful patterns, but polished scores can also turn normal variation into daily alarm. Here is how to decide which metrics deserve attention.
Digital Detox Benefits: What Changes When the Phone Gets Quieter
A useful digital detox targets the cues and apps that repeatedly drain attention. Recent trials suggest what can change when mobile access gets quieter.
The Science of Habit Formation Applied to Health Behavior Change
Health habits become easier to repeat when a visible behavior has a stable cue, low friction, an achievable minimum, and a plan for interruptions. Motivation can then play a smaller role.
Does Creatine Cause Hair Loss? A Close Look at the Evidence
A 2025 randomized trial measured hair density and follicle health directly. Here is what it found, what remains uncertain, and when shedding deserves evaluation.
What AI Is Actually Doing in Diagnostic Medicine Right Now
Clinical AI usually performs a narrow task: triaging images, making measurements, analyzing signals, improving image quality, or organizing records. Its value depends on validation, workflow, transparency, and human review.
The Testosterone Conversation: What’s Actually Driving the Decline and What to Do About It
Fatigue, low motivation, weight change, and sexual symptoms do not diagnose low testosterone. A useful evaluation combines repeat morning testing with sleep, medication, metabolic health, fertility, and monitoring.
What Is a Good VO2 Max? Healthy Ranges by Age and Fitness Level
VO2 max reflects cardiorespiratory fitness, but a useful result depends on age, sex, testing method, and personal trend.
How Much Exercise Is Actually Enough? The Latest Guidelines vs. Real Life
The 150-minute exercise guideline is useful, but real schedules rarely fit a perfect plan. Here is how aerobic work, strength training, sitting breaks, and gradual progress can fit into an ordinary week.