The complete guide to the iPhone's Bedtime mode

The iPhone's new "Bedtime" functionality within the alarm clock app is an innovative and interesting introduction. 

Working on the basis that being consistent with the amount of sleep you get (i.e., going to bed and waking up at the same time every day) is better for your health, this useful tool makes it easier to achieve this goal.

But how do you get the most out of the new feature? Here's everything you need to know about the iPhone's Bedtime mode, from getting started to analyzing your results. 

So, how much sleep do you need?

If you've never really thought about it before, it can be hard to guesstimate exactly how much sleep your body needs.  Read more...