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, ...

After waking up to over a dozen sunrise alarm clocks, these are the best for gentler wake-ups and less morning grogginess.

The best alarm clocks help you wake up on time and ready to face the day. We picked our favorites, including options for heavy and light sleepers.