Remember tree climbing? Well, it actually looks like quite the workout.

What's Your Workout: Tree Climbing Ann Koenig is an urban forester for the Missouri Department of Conservation. In her downtime, she's up in the trees -- as a competitive tree climber.

“If you engage in a tree climb, it is a full-body workout. It is much more interactive and therapeutic to be outside as opposed to a gym,” an instructor said.

He runs every so often, but mostly his tree-climbing workouts involve a couple hours a day in his trees, tapping bells slung from limbs with his handsaw, racing up ropes and generally mirroring ...

A decent level of physical fitness, a fondness for climbing, an intimate knowledge of giant old-growth tree species, and being handy with a crossbow: If ...

Saying that a recent tree-climbing school was hands-on is a bit of an understatement. As an arboreal activity that requires a ...

Kesha, 34, shows off her strength while climbing a tree wearing just a scarf in a new Instagram snap. The pop star's trainer says her muscles come from Pilates.