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 1.5m/5ft of Movement Speed to stand up.
- A character with the Athlete feat spends only 1.5m/5ft of Movement Speed to stand up.
