Gwyneth Paltrow, Mindy Kaling, and Carrie Underwood all swear by their wearable fitness trackers. So do millions of other Americans. In 2022, wearable technology was the number one fitness trend both here and around the globe.

But do these hi-tech gadgets live up to their hype?

On the pro side, says Johns Hopkins Medicine, studies show that they help lower LDL cholesterol and blood pressure, and influence how much you exercise (urging you onward). One recent review of 400 studies found that pedometers, other types of wearable devices, and smartphone apps encourage users to spend around 40 more minutes a day walking.

If keeping track of time spent exercising, calories burned, your heart rate, and/or your blood pressure boosts your commitment to improving your health, there’s nothing bad there.

However, it pays to be aware of the potential downsides of wearable fitness trackers.

In 2020, a study found that these devices can increase anxiety about diagnosed health conditions. For people with atrial fibrillation, for example, the researchers said that can lead to unnecessary visits to the emergency room.

And for anyone, heart rate monitors worn on the wrist can be inaccurate because they measure blood flow away from the heart, and light hitting the sensor can reduce accuracy. To get an accurate heart rate, you need to wear a chest strap heart monitor.

Calories burned are also often miscalculated, as is walking speed. 

Let these entertaining technologies encourage you to exercise, but for serious medical evaluations and concerns, see your doctor.