Yes, you can use your Pebbles at night to aid sleep.

Select a relaxation-focused breathing exercise in the Glimp app, create a comfortable environment, and sync your breathing with the Pebbles' vibrations. This practice can help calm your mind and body, promoting better sleep. Remember to wind down gradually and use the Pebbles as part of a broader sleep hygiene routine. If you have persistent sleep issues, consult a healthcare provider.