Status Display - epolixa/Shroomhearth-Datapack GitHub Wiki
Players may emit particles depending on certain status conditions.
Low Health
When a Player has three hearts or less, they will start emitting "Hurt" (also referred to as "bleeding") particles from their body.
Insomnia
When a Player has been awake long enough for Phantoms to appear, "Sleepy" particles will start emitting above their head.