Add Yahoo as a preferred source to see more of our stories on Google. So what’s the solution? How can we make it easier for heavy sleepers to wake up? In cases like this, a more purpose-built alarm ...

If you're a very heavy sleeper, you already know a regular alarm clock usually doesn't get the job done, and phone alerts or easygoing sunrise alarms don't rouse those who are deep in an REM cycle, ...

When you buy through our links, Business Insider may earn an affiliate commission. Learn more No one likes getting up in the morning — unless you're an early bird — but a good alarm clock makes waking ...