It’s 3am.  You’re awake again.  Instead of sleeping soundly, you groan inwardly.  Rest feels so elusive. Breathing exercises. Visualizations. Didn’t I take melatonin earlier?  Anxiety, dread, and despair set in.  You think about checking emails for work.  But your brain is so tired.  Just as you almost fall asleep, a jolt of fear tightens your chest.  The next day, you wake exhausted and hopeless that this cycle repeats, night after night.

In our chronically sleep-deprived society, many are using gadgets and apps to measure the quantity and quality of their shut-eye. But they could be causing more harm than good

When you can't sleep, you're desperate for help. And there's a booming industry waiting to tell you all the ways a lack of sleep can ruin your health -- and to sell you fancy gadgets to help you finally doze off.