Light boots with good ankle support can greatly reduce leg fatigue if you arent used to steep terrain. Also ridge tops are easier to travel than hollers. So if you break off the ridge after a bird and for whatever reason are ready to come out, it may be easier to go backup the side of the ridge to come out rather than just going down the holler. Typically the holler will be full of deadfall and can be a pain to navigate even if it looks easier at first.