the.com/joggers

means Loose, tapered knit or fleece pants with an elastic or drawstring waist and cuffed ankles, originally made for running but now worn mostly for not-running.

from The word rides on 'jog,' which entered English in the 1500s meaning to shake or nudge along, only later settling into its 'slow trot' sense around the 19th and 20th centuries as running for exercise caught on. 'Jogging' as a fitness craze took off in the mid-20th century, and the loose, elastic-cuffed pants worn for it borrowed the name directly — 'joggers.' The irony wrote itself: the pants outlasted the actual jogging.