Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

Microsoft has a free Windows 11 battery health tool to diagnose your PC - how it helped me ...

COVID and flu tests aren't designed to tell you how sick you are, but if you use them to monitor your infection, they can ...

If you're curious about your heart health, there are quick tests you can perform at home -- no equipment required.

Learn how to do a warranty check by VIN and read your odometer mileage to see if your car’s factory bumper-to-bumper or powertrain warranty has expired. MarketWatch Guides may receive compensation ...

Learn how to understand dog blood work with this comprehensive guide. Decode CBC, chemistry panels, liver, and kidney values.

Get insights beyond your weight to get the bigger picture of what’s going on in your body.

I take hydration seriously, but this reusable, smart water bottle helped me realize I wasn't drinking enough water.

My Oura Ring raised a red flag about my health, and I made the mistake of ignoring it ...

Women’s health sends signals that matter. Octavia Spencer and Sofía Vergara discuss why listening early can help women ...

A research team led by La Trobe University has developed a single-use test strip which could ultimately change how diseases like cancer are diagnosed. The research, published in the journal Small, ...

Using the ATX 9801 is easy -- plug one end into a mains outlet, and it acts like a short extension lead with a digital display. The socket on the front accepts pretty much every power plug worldwide, ...