Why: There is some evidence that omega-3 fatty acids may ease anxiety symptoms and lift your mood by lowering levels of stress chemicals such as adrenaline and cortisol in the body. Caned fatty fish, such as tuna and salmon, walnuts, and flax seeds are all great sources of omega-3 fatty acids.
As you may already know from reading How Butterflies Work or Where do butterflies get their striking colors?, butterfly wings are made of very thin layers of a hardened protein called chitin.
The physical differences between moths and butterflies are usually easy to see: Butterflies' antennae are wider at the tips -- their ends look like little clubs. Moths' antennae are often feathery. Sometimes, they're thin like butterflies' antennae, but without the clubs.