Snapping commonly occurs when a Misting or Mistborn undergoes heavy stress and pain, often in a near death situation, causing them to trigger latent Allomantic abilities.
Children of confirmed noble bloodlines often underwent a planned beating as a test to see if they snapped. Later, however, the mists caused sickness in people, triggering their own snapping, this process was started by Preservation, but was manipulated by Ruin in to killing people, thus raising superstitions about the mists being dangerous.
The length a person has "mist sickness" relates to their Allomantic powers and abilities.
During the time the mists were snapping people, notably in The Hero of Ages, they also raised the Allomantic potential of the people they snapped so exactly 16% were snapped.
|The Metallic Arts|
|Arts||Allomancy · Feruchemy · Hemalurgy|
|Concepts||Metalborn · Snapping · Savants · Metalminds · Twinborn · Compounding · Blessings|
|Constructs||Steel Inquisitors · Koloss · Kandra|
|Base Metals||Iron · Steel · Tin · Pewter · Zinc · Brass · Copper · Bronze · Cadmium · Bendalloy · Gold · Electrum · Chromium · Nicrosil · Aluminum · Duralumin|
|God Metals||Atium (Malatium) · Lerasium · Ettmetal · Trellium|
|Era 1 books||Mistborn: The Final Empire · The Well of Ascension · The Hero of Ages · (Mistborn: Secret History · The Eleventh Metal)|
|Era 2 books||The Alloy of Law · Shadows of Self · The Bands of Mourning · The Lost Metal · (Allomancer Jak and the Pits of Eltania)|
|Shards||Preservation · Ruin · Harmony|
|History||Classical Scadrial · Final Empire · Catacendre · Elendel · Southern Scadrian|
|Magic||Metallic Arts (Allomancy, Feruchemy, Hemalurgy) · Metalborn · Mistborn · Misting · Savant · Ferring · Twinborn · Compounding · Atium · Lerasium · Ettmetal|
|Other Media||Mistborn Adventure Game · Mistborn: Birthright · Mistborn film · Mistborn: House War|