Smoking is the primary cause of preventable illness and premature death, harming nearly every organ of the body and reducing both quality of life and life expectancy. However, quitting is notoriously difficult, and many people try all sorts of ways to stop…

A recently published study says there is "basically zero" correlation between data coming from wearable sensors and self-reported stress levels. However, smartwatches and wearable gadgets aren't entirely...