I walk 3-6 miles daily outside. In all seasons I have trouble wearing anything that fits close to my skin or of wool. When working out in winter I was wearing lululemon leggings layer 1, heat holder leggings layer 2 and Nike leggings layer 3 during freezing temperatures and my lichen sclerosis flared up big time. Then I started wearing loose leggings without any wool fibers and it didn’t flare up as intensely, unless I sweat. I then started wearing cotton loose panties under my leggings and it also helped some. Triggers are definitely tight clothing, sweating and fibers of pants. They always cause major lichen sclerosis flares.