Why the Apple Watch's 20-minute calibration test is worth your time - especially if you're data curious ...

You know the long run is the cornerstone workout of a marathon training plan. But determining how far you should go can seem ...

Learn how to measure your sweat rate and build a hydration plan to improve cycling performance, endurance, and heat ...

In TODAY.com’s Expert Tip of the Day, personal trainer Stephanie Mansour reveals the optimal duration of a workout if your ...

If you’re following AI news, you’re probably getting whiplash. AI is a gold rush. AI is a bubble. AI is taking your job. AI ...

If every step taken, hour slept, and heartbeat can be measured, recorded, and analyzed, are we taking control of our health ...

When a person runs first thing in the morning, they are training in a state where they have fasted for eight to twelve hours consistently. Glycogen stores are lower than they’d be later in the day, ...

As a certified personal trainer, I tested 16 wearables while training, running and swimming. Here are the best fitness ...

Whether you're catching a train after the curtain call, squeezing multiple shows into one day, or just organizing your NYC itinerary, knowing the run time of Broadway performances is essential. In ...

Tracking your steps after 55 can boost heart, brain, and metabolic health. Walking up to 7,000 daily steps can improve ...

Curious about AI, but not sure where to start? Google Labs has dozens of AI experiments you can try out. Here are some of my ...