Soaring across the captivating blue sky amongst the green treetops in a beautiful rainforest can offer you the thrill of a lifetime. With the public’s sparked interest in zip lining, new destinations for zip lining have began appearing in countless locations. Some zip lines can reach as high as 5,000 feet off the ground—like the one in Toro Verde National Park in Puerto Rico—and can take participants at speeds of up to 100 miles per hour. Undoubtedly, such an experience can take your breath away, but it is important to take precautions when zip lining, as injury or death can be a result of faulty equipment or improper technique. Unlike amusement parks and some other adventure sports, zip lining is not heavily regulated by the government. Pay attention to instruction from your tour guide, and watch for frayed or old-looking equipment.