All day long, we're inundated by interruptions and alerts from our devices. Smartphones buzz to wake us up, emails stream into our inboxes, notifications from coworkers and far away friends bubble up on our screens, and "assistants" chime in with their own soulless voices. Such interruptions seem logical to our minds: we want technology to help with our busy lives, ensuring we don't miss important appointments and communications. But our bodies have a different view. These constant alerts jolt our stress hormones into action, igniting our fight or flight response; our heartbeats quicken, our breathing tightens, our sweat glands burst open, and our muscles contract. That response is intended to help us outrun danger, not answer a call or text from a colleague. We are simply not built to live like this. Our apps are taking advantage of our hard-wired needs for security and social interaction and researchers are starting to see how terrible this is for us. A full 89 percent of