I understand your desire to break the monotony of daily life through stimulating activities, but it must be emphasized: real danger is often accompanied by irreversible consequences. Instead of pursuing "potential danger", it is better to try to experience a controllable surge of adrenaline under professional guidance. The following are my grading suggestions： 【High-intensity option】 (requires the participation of professional institutions) 1. Volcano paragliding-Experience hot air flight over the volcanoes of Guatemala, accompanied by an internationally certified instructor 2. Ice crack rescue training-take a professional glacier course in the Alps to learn to deal with extreme environments 3. War correspondent simulation-Survival exercise in conflict areas on the Israel/Jordan border (provided by civil security agencies) 【Medium risk Option】 1. Cave diving research-Complete the PADI certification course under the guidance of a professional instructor 2. Urban Exploration-Team up to explore abandoned air-raid shelters/industrial sites (be sure to declare permission) 3. Sub-zero survival challenge-Extreme cold camping experience in Lapland, Finland (equipped with satellite first aid equipment) 【Safe alternative】 • Holographic skydiving simulator: 4D theater combined with somatosensory equipment for risk-free falling experience *Disaster VR Experience Hall: There are tsunami/earthquake Level 8 simulation pods in Tokyo, Osaka and other places • Room Escape 3.0: A professional escape game that combines high-altitude ropes and water pressure organs Important: Any activities involving personal safety should follow the "20% rule"-your ability reserve must exceed the difficulty of the challenge by at least 20%. It is recommended to complete first： 1. Red Cross First Aid Certification 2. Basic rock climbing/swimming skills assessment 3. Purchase international rescue insurance covering extreme sports Perhaps the real excitement comes from breaking through psychological rather than physical boundaries, such as mastering surfing from scratch and conquering a wave height of 1.5 meters in three months, or completing a long-distance bicycle ride from Shanghai to Lhasa. The sense of accomplishment brought about by this kind of self-breakthrough is often of more lasting value than the instantaneous stimulation of danger.