> Part of me is tired of spending so much of my life in front of a computer. Sports/activities are great. I don't know how old you are, or if you have kids or not, but if you have little responsibility, I would pick an activity and then move somewhere that the activity is easily accessible. If it's surfing, then move to somewhere and live on the beach. If it's skiing/snowboarding, live on a mountain during the season…
For what I understand, burnout happens a lot to people who are/were really passionate about their job or at least some part of it. Their passion became their job, and at some point they run out of meaning or satisfaction arising from it.
At this point, as you say, sports and hobbies help, but it's a bit hard, because the temptation is to get hobbies related, say, to coding or computing; or other intellectual hobbies that may be difficult when you come home tired at the end of the day.
Hikes, surfing, skiing, are very nice options, but so could be, say, playing soccer with friends once a week, building model trains, learning to paint, trying a new sport, going to the cinema more often, getting into baking, and many other things.