How to regain the health

Larger fires cast a wider radius of light, and offer more resistance against a later game creature which extinguishes fires. A single log adds 45 seconds to a campfire, and 90 seconds to a firepit. If it is raining, a firepit will consume fuel twice as fast. A more complete table of fuels can be found here.

While a Firepit is a controlled fire, a campfire is considered uncontrolled, and can jump to nearby flammable objects. The larger the fire is, the farther it can jump.

There are a lot of ways to regain sanity. Excluding the Hallucination-killing ones, that require you to lose sanity due to the Insanity aura, here are some powerful ways that let you recover quickly:

• Sleep in a Tent (+50 Sanity)
• Sleep in a Straw roll or Fur roll (+33)
• Repair a Relic (+20)

These are quite easy to do, and more powerful than any food-eating or flower-picking method.

Anyway, for a complete list of Sanity recovering methods you can head to the Sanity page on the wiki.