BASE jumping is an extreme sport that involves jumping from fixed objects, such as buildings, antennas, spans (bridges), and earth (cliffs). The term "BASE" is an acronym that represents these four categories. Jumpers use a parachute to safely descend to the ground after leaping from a height. Participants in BASE jumping typically wear specialized gear, including a parachute and a jumpsuit designed for aerodynamics. The sport requires extensive training and experience, as the jumps are often made from low altitudes, leaving little time for parachute deployment. Safety measures and regulations vary by location.