NATURAL HEALING: Instead of rolling your Hit Dice in order to regain Hit Points at the end of a Short Rest. You yourself decide how many Hit Points you will regain up to a maximum of a quarter of your resting-pool. The number of Hit points available in the resting-pool is equal to your Hit Point total.
After a long rest a quarter of the Hit Points in the resting-pool is replenished.
Winded (presset): 99% or less hit points left
Bruised (forslået): 75% or less hit points left
Bloodied (såret): 50% or less hit points left
Mauled (smadret): 25% or less hit points left
1) All magical healing is "Supreme Healing" (PHB, p. 60).
2) Disciple of Life & Blessed Healer (PHB, p. 60) = 5 hp.
RESTORATION & EXHAUSTION: A Lesser Restoration spell can be spend to heal* one exhaustion level on any given person once per day. Where as the Greater Restoration spell can be used as many times as you have spell slots to spend on a person. So typically you heal one exhaustion level with Lesser Restoration. And if needed, and possible, follows up with Greater Restoration spells.
* remember that exhaustion caused by lack of food or water can't be removed
until the character eats and drinks the full required amount (PHB, p. 185).