But is 6% as a proportion of overall sleep not enough?

While there isn't a specific clip addressing whether 6% deep sleep is enough, typically, deep sleep should make up a larger portion of total sleep, especially in younger adults. Deep sleep is crucial for physical recovery, memory consolidation, and other vital processes.

The general recommendation for deep sleep is around 15-25% of your total sleep time, depending on age and individual needs. Achieving less deep sleep than this could indicate a sleep quality issue and might point to not getting enough restorative rest. If you're consistently getting only 6% deep sleep, it may be worth consulting a sleep specialist or healthcare provider for guidance on improving sleep quality. Monitoring factors such as sleep environment, nutrition, exercise, and stress levels can also help enhance sleep quality.