>>2639894find a cluster of short trails, so you can do 1 short one as a test and if all is well do one more. maybe do stuff like a historic walk instead of hike.
check the weather, dress accordingly but have the ability to add/ remove gear if it rains, or you get hot etc.
take a water bottle and a mild snack literally anything is fine, take a box of mc nuggets.
take shoes, clothes you are used to, so you don't get blisters.
get checked for autism since cant figure this out on your own
