Based on your range of motion and other metrics, your Galaxy Watch can figure out which activity you're performing, like running or swimming, and track it without prompting.
Bedtime Mode will leave your alarms on, silence all other notifications, disable your always-on display, and raise to wake. Theater Mode will do the same and also silence alarms.
Your smartwatch can track various metrics, like how much you snore or calories you burn while asleep, and sleep cycle stages (awake, REM, deep sleep, etc.).
Your smartwatch can help detect sleep apnea, coach you for a better night's sleep, and give sleep reports, tips, checklists, meditation guidance, and more.