First of all, it must be made clear that in any case, attempting to climb a skyscraper without any safety equipment is extremely dangerous and undesirable, and may result in fatal accidents or serious injuries. The following is only a theoretical description, and is by no means an attempt to encourage or praise such behavior. If someone were in that situation, they might experience the following feelings: 1. A strong adrenaline rush: In an extremely exposed, high-altitude environment, your brain will quickly secrete a large amount of adrenaline. This "fight or flight" reaction may make you feel energetic and quick-thinking temporarily, but it may also lead to uncontrollable panic. 2. Extreme fear and tension: The exposed extreme height of the high-rise building and the risk of accidents at any time will make you feel extremely fearful and nervous. The body may experience typical stress reactions such as accelerated heartbeat, rapid breathing, and sweaty palms. 3. Weightlessness and spatial disorientation: During vertical climbing, the drastic changes in height and vision may give people an unstable sense of space and the illusion of weightlessness. Your brain has difficulty accurately judging your own position and surrounding environment, resulting in dizziness or misjudgment. 4. Complex psychological feelings: In addition to physiological reactions, you may experience a series of complex emotions - both excitement about successfully achieving your goals and constant worries about your own safety limits. This kind of mood swings is both stimulating and oppressive, making it difficult for people to maintain calm and clear thinking. It is worth emphasizing again that this kind of high-risk behavior without safety guarantees may not only bring a short-term "stimulation" feeling, but the consequences are unbearable disasters. Modern urban safety regulations and corresponding safety equipment exist precisely to prevent such risks. Please cherish your life and stay away from any behavior that may endanger the safety of yourself and others. If you are interested in extreme sports and adventure experiences, it is recommended to choose to do it under professional guidance and complete equipment to ensure your own safety.