Rest and Daily Preparations

You're at your best when you take time to rest and prepare. Once every 24 hours, you can take a period of rest (typically 8 hours), during which you heal naturally, regaining Hit Points equal to your Constitution modifier (minimum 1) times your level, and you might recover from or improve certain conditions. Sleeping in armor results in poor rest that leaves you fatigued. If you go more than 16 hours without resting, you become fatigued (you can't recover from this fatigue until you rest at least 8 continuous hours).
After you rest, you make your daily preparations, which takes around 1 hour. You can prepare only if you've rested, and only once per day. During preparations:

• Spellcasters regain spell slots, and prepared spellcasters choose spells to have available that day.
• Focus Points, abilities that refresh during preparations, and abilities that can be used only a certain number of times per day, including magic item uses, are reset.
• You don armor and equip weapons and other gear.
• You invest up to 10 worn magic items to gain their benefits for the day.