See also Prone (Condition Type)
Prone - Can't move or take
Actions, 
Bonus actions, or 
Reactions, and has 
Disadvantage on 
Strength and Dexterity saving throws. - Attacks against a Prone creature have
Advantage if they're made within 
3 m / 10 ft of the creature. - A Prone creature must spend half its Movement Speed to stand up.
- A character with the Athlete feat spends only 1.5 m / 5 ft of Movement Speed to stand up.
- A character with the Athlete feat spends only
Notes
- A creature who is knocked Prone does not skip their next turn, they will simply use their movement to get back up.
- However if a creature gets knocked Prone during their turn, their turn will automatically end and they will not get back up until the start of their next.
- Knocking an enemy Prone and reducing their movement speed to 0 will skip their next turn as they can't get back up.
- Some creatures are immune to the Prone condition, including those without a physical body (such as Shadows and Wraiths).
