@pubity: 😂 Zip lines work by converting gravitational potential energy into kinetic energy, meaning the heavier the rider, the faster and harder the swing. Studies on balance and coordination show that proprioception, the body’s ability to sense its own position in space, naturally declines after age 60, making dynamic grip activities like zip lines significantly harder to stick. None of that information was available to papa before he committed. The grandkids asked if he was okay. He held the stick up like a trophy. That’s a man who sticks the landing on his own terms. #RoadTo19M #Pubity (Via Collab)