Rule Details
You can't wake up from unconsciousness while you have 0 Hit Points. If you're unconscious and have 1 or more Hit Points, you wake up in one of five ways.

• You take damage, provided the damage doesn't drop you to 0 HP.

• You receive healing, other than natural healing from resting.

• Someone nudges or shakes you awake with an Interact action.

• If there's loud noise, at the start of your turn attempt a Perception check against the noise's DC, waking up if you succeed. If creatures are attempting to stay quiet, this uses their Stealth DC.

• The GM decides you wake up either because you have had a restful night's sleep or something disrupted that restful sleep.