I would second this. I took up bouldering and it's amazing how much more energy I have. My lower-back pain from sitting has nearly disappeared.

It's a true full-body workout (including the brain).

It's not so good for lower body or cardio. Supplementing it with something like cycling can really help get the whole shebang.

While I agree supplementing with cycling or running is great, on the boulders if you’re too “top heavy” try focusing on “wobbly” problems more. Find a gym with a slab wall, and practice balance style climbing where you don’t need strength in the arms & shoulders. Doing that regularly will balance out the legs portion easily if biking or running isn’t your thing.

no it wont. Its not even remotely stimulating enough compared to actual lower body exercise.

I would add buying a kettlebell and starting to do swings and Turkish get-up. They're energizing and work almost your entire body in a functional way.

I'd add hiking or running to this. I've seen my coworkers get winded walking hilly sidewalks, any type of ambulatory work is at the heart of human function.