When I'm out hiking people often comment on my dog's backpack and say something like "look at him carrying his own weight." But that's not what he's doing! His backpack starts every hike empty. As the day goes on it fills with dog bags containing his poop, any trash that I generate -- like food wrappers -- plus any other trash that I find on the trail.
In 2020, follow my dog's lead and consider a resolution to leave trails cleaner than you found them. https://www.wta.org/news/signpost/i-picked-up-80-pounds-of-trail-trash-in-2019-heres-what-i-learned
For people who can't stop tooting!