Close up of slack line ratchet while person tries to stand on it causing some large wobbles and small jitters

slackline slacklining slack line green tightrope balance test balancing climbing balance tie tighten tension home exercise fitness exercise active activity slack trees line sport stretch bush jitter bushes grass wobbles tree physical sunny sun bright sky home jitters blue sky close up shed barn wobbling wobble tight leaves birch blue ratchet silver barefoot silver birch