Config Options

20 ticks ≈ 1 second

Option	Type	Default (Vanilla)	Description
constantRegenRate	Integer	80 ticks	How often the constant regen is applied (in ticks)
constantRegenAmount	Float	0	How much health is regened when constant regen is applied (in health points)
constantExhaustionRate	Integer	80 ticks	How often the constant exhaustion is applied (in ticks)
constantExhaustionAmount	Float	0	How much exhaustion is added when constant regen is applied
starvationDamageRate	Integer	80 ticks	How often damage applies when you have no hunger (in ticks)
starvationDamageAmount	Float	1	How much the player is damaged when starvation damage is applied (in health points)
foodRegenRate	Integer	80 ticks	How often regen from food is applied (in ticks)
foodRegenHealthAmount	Float	1	How much regen you get from food regen
foodRegenExhaustionAmount	Float	1	Multiplier on how much exhaustion you get from food regen
foodRegenMinimumHunger	Integer	18	The minimum amount of hunger you need for food regen to apply
hyperFoodRegenRate	Integer	80 ticks	How often hyper-regen from food is applied (in ticks)
hyperFoodRegenHealthMultiplier	Float	1	Multiplier on how much regen you get from food hyper-regen
hyperFoodRegenExhaustionMultiplier	Float	1	Multiplier on how much exhaustion you get from food hyper-regen
hyperFoodRegenMinimumHunger	Integer	20	The minimum amount of hunger you need for food hyper-regen to apply
dynamicRegenRateCurve	Curve	DISABLED	The curved used for Dynamic Regen (see Dynamic Regen)
dynamicRegenRateMultiplier	Float	1	Stretches or Compresses the curve used (see Dynamic Regen)
dynamicRegenOnConstantRegen	Boolean	True	If Dynamic Regen should apply to regen from constant regen
dynamicRegenOnConstantExhaustion	Boolean	True	If Dynamic Regen should apply to exhaustion from constant exhaustion
dynamicRegenOnFoodRegen	Boolean	True	If Dynamic Regen should apply to regen from food regen
dynamicRegenOnHyperFoodRegen	Boolean	True	If Dynamic Regen should apply to regen from hyper food regen
spawnHealth	Integer	20	How much health the player should spawn with
spawnHunger	Integer	20	How much hunger the player should spawn with
foodLevelForSprint	Integer	6	How much hunger is needed to sprint (Client-side only rn)
jumpExhaustionAmount	Float	0.05	How much exhaustion you get from normal jumping
sprintJumpExhaustionAmount	Float	0.2	How much exhaustion you get from sprint jumping
walkingExhaustionMultiplier	Float	0	How much exhaustion you get from walking 1cm
sprintingExhaustionMultiplier	Float	0.1	How much exhaustion you get from sprinting 1cm
crouchingExhaustionMultiplier	Float	0	How much exhaustion you get from crouch walking 1cm
swimmingExhaustionMultiplier	Float	0.1	How much exhaustion you get from swimming 1c
walkingUnderwaterExhaustionMultiplier	Float	0.1	How much exhaustion you get from walking underwater 1cm
walkingOnWaterExhaustionMultiplier	Float	0.1	How much exhaustion you get from walking on water 1cm
hungerFromFoodMultiplier	Float	1	Modifier on how much hunger you get from eating
saturationFromFoodMultiplier	Float	1	Modifier on how much saturation you get from eating
disableRegenWhenUsingShield	Boolean	False	Disables all regen while using a shield
shieldExhaustionRate	Integer	80	How often exhaustion from using a shield is applied
shieldExhaustionAmount	Float	0	How much exhaustion is applied when using a shield
sleepExhaustionAmount	Float	0	How much exhaustion is applied when a player has slept through the night
dynamicSleepExhaustionAmount	Float	0	How much exhaustion is applied every in-game hour the player is asleep
debug	Boolean	False	Shows how much regen a player gets and some applications of exhaustion. Not recommended if there’s more than one player
effects	Array	Empty ([ ])	List of HealthEffects (see HealthEffects)
sleepEffects	Array	Empty ([ ])	List of SleepEffects (see SleepEffects)

FoodRegen vs HyperFoodRegen
In minecraft, there's two levels of healing you can get from food. This wiki page refers to them as hyper and normal.

• Hyper is when you have a full hunger bar and some saturation
  • f = min(playerSaturation, 6)
  • heal = (f / 6) * hyperFoodRegenHealthMultiplier
  • exahustion = f * hyperFoodRegenExhaustionMultiplier
• Normal is when yo have 18 or more hunger points
  • heal = foodRegenHealthAmount
  • exahustion = foodRegenExhaustionAmount

If the hyper level applies, then the normal doesn't

Dynamic Regen:
A multiplier placed on the regen rates based on the player's health. The exact formula depends on which curve you use. All of them use steps as an increment.
Step Formula:
step = ((20 - playerHealth) * dynamicRegenRateMultiplier) + 1
Formulas for specifc curves:

• DISABLED - 1 (no change)
• LINEAR - step
• QUADRATIC - step^2
• EXPONENTIAL - e^step

Want the regen rate when you're at the lowest health to be x times longer than what it would be with full health, and want it to have equal steps along the way?
Set dynamicRegenRateCurve to LINEAR
Set dynamicRegenRateMultiplier using this formula: (xTimesLonger - 1)/ 20

HealthEffects: HealthEffects are status effects that are applied to player with a certain health, hunger, or both. The amplification can also scale based on the health/hunger using a curve. Example HealthEffect with all the options used: All of these fields are options (except effect)

{
  "effect": "slowness",
  "healthLowBound": 0,
  "healthHighBound": 15,
  "hungerLowBound": 0,
  "hungerHighBound": 10,
  "amplifier": 0,
  "amplifierCurve": "DISABLED",
  "amplifierCurveMultiplier": 1.0,
  "amplifierCurveSource": "HEALTH",
  
  "onSleep": false,
  "onSleepDuration": 0
}

This will apply slowness with no amplification (same as /effect give @p slowness DURATION 0) when a player has between 0-15 health and 0-10 hunger. With no change in amplification as health or hunger go down. And since we didn't set onSleep to true, this will apply all the time instead of only when the player sleeps.