leaf: originates from the Proto-Germanic word *lauba (leaves), maybe from Proto-Indo-European *leub(h), meaning "to peel off/ to strip". Man, these puns just write themselves, don't they
Research studies have found knitting to be associated with reduced levels of stress2, subjective improvement in cognitive functioning3, and a lower risk of cognitive decline4, mild cognitive impairment5, and dementia6,7,