Activity tracker stress challenge - Garmin Vivosport vs Fitbit Alta HR

What's the best activity tracker for accurately monitoring heart-rate in stressful situations? We put the Garmin Vivosport activity tracker against the Fitbit Alta HR in a creepy crawly challenge to find out which wearable is best at monitoring an increased heart-rate in stressful situations. Using a professional-grade heart-rate monitor as a control to see how close each wearable gets to our actual heart-rate, we came face-to-face with a baby owl, a snake and a tarantula spider. The Garmin tracker has a built-in heart-rate monitor which can be used to report on stress levels. This can be viewed on the device, or via an app. It costs £149.50. The Fitbit continuously tracks your heartbeat through a wristband and is similarly compatible with both iPhone and Android phones. It costs £119.99. The verdict? Both devices were good at monitoring our heart-rate in stressful situations but while the Garmin Vivosport slightly overestimated our increased heart beats per minute, the Fitbit Alta HR underestimated our bpm. For an in-depth Garmin Vivosport review visit https://ift.tt/2OY7Est. For an in-depth Fitbit Alta HR review visit Huami Xiaomi Amazfit Bip visit https://ift.tt/2o0NBhT. For more on activity trackers visit https://ift.tt/2ByCpm2. Which?: http://www.which.co.uk Twitter: https://twitter.com/whichuk Facebook: https://ift.tt/1fAOmna