| Answer | Crossword Clue |
|---|---|
| REMS | Sleep cycle phenomena |
| SOLARFLARES | Phenomena that follow a cycle of about 11 years |
| REMS | Sleep phenomena |
| REM | Sleep cycle |
| REM | Sleep cycle acronym |
| REM | Sleep cycle letters |
| REM | Sleep cycle occurrence |
| REMS | Sleep cycle occurrences |
| REM | Sleep cycle part |
| REM | Sleep cycle, for short |
| REM | Type of sleep cycle |
| REM | Part of a sleep cycle |
| REM | Part of a sleep cycle: Abbr. |
