Massage therapist and educator Michelle Roos, 42, is one of the many Americans who has gotten outdoors more often in 2020. (The Outdoor Industry Association recently reported a more-than-8% gain, since mid-2020, of Americans taking up cycling, hiking, birdwatching, camping, running and other outdoor activities.) Growing up in Bowling Green, Kentucky, Roos camped, hiked, walked along creeks and into caves, and…