Ever feel more inclined to veg out on the sofa than hit the gym? If so, you’re not alone. What’s more, "laziness" might be a perfectly normal part of being human — it may be in our biology. Our ancestors likely had to spend a good part of their days foraging and hunting for food, so they became programmed to rest whenever they could to save energy. That programming appears to persist in modern humans....
In our modern world, we are tethered 24/7 to our cell phones and laptops, so we don’t leave our work behind when we leave the office. Even airplanes—which had been that last bastion of disconnectivity—now have inflight Wi-Fi, so those emails that would have once been left unanswered for a few blessed hours beg for our attention during an entire flight. Some fliers believe it is essential to open our...