Between the blue light from our screens, the notifications from our phones and the general pace of modern-connected-everything life, getting a good night's sleep or settling down to focus and concentrate on some important work can be very difficult.
These sliding scales of attentiveness and tiredness are in part defined by circadian rhythms, 24 hour cycles that humans have evolved to respond to, based on natural light patterns. It’s why you’re more likely to feel sleepy in a dimly-lit cinema room than watching a movie in your brightly-lit living room, or feel more ready to get to work at a desk sat next to a window flooded with daylight than in a pokey corner of a basement office.
