01-16-2021, 02:48 PM
This is mentioned in the Fasting Lifestyle page, and is impractical for a human or near-human because they don't have enough surface area to capture enough sunlight for their energy needs. Though it might be useful for a tweak with increased surface area (e.g. in the form of wings) and/or decreased energy needs. Note that if you want to get useful amounts of energy from photosynthesis, it would also be necessary to spend the day exposed to the sun and either go naked or wear transparent clothing.