Making Port O'nor
The most expedient method of healing is through the use of magic, but when magic is not available, you can regain hit points by resting. You can take two different kinds of rests: a short rest and a long rest.
A short rest is a period of downtime, at least 1 hour long, during which you catch your breath, eat, drink, and clean and bind wounds.
You can spend one or more of your Hit Dice during a short rest, up to your maximum number of Hit Dice. For each Hit Die you spend in this way, roll the die and add your Constitution modifier to it. You regain hit points equal to the total. You can decide to spend an additional Hit Die after each roll. Once you have spent all your Hit Dice, you must complete a long rest to regain them.
A long rest is a period of extended downtime, at least 8 hours long, during which you sleep or perform light activity: reading, talking, eating, or standing watch for no more than 2 hours of the rest period. If the rest is interrupted by a strenuous activity—such as attacking, taking damage, or casting a spell—you must start the rest over to gain any benefit from it, unless the interruption takes less than an hour.
You must have at least 1 hit point to take a long rest. At the end of the rest, you regain all your hit points and half of your maximum number of Hit Dice (round up).
You cannot benefit from more than one long rest in a 24-‐hour period.
Elves do not need to sleep. Instead, they meditate deeply for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.