The experience of exploring the edge of life and death is often accompanied by extremely high risks, but there are indeed some legal and controllable ways to make people feel the fragility and preciousness of life. The following are some **Carefully screened** perspectives, but please be sure to take safety as a prerequisite： --- ### 🌄**The sense of boundary in nature** 1. **Hiking at high altitudes (such as the Himalayas)** In an environment with thin oxygen, the body instinctively feels the limit of survival. However, it is necessary to strictly follow the mountaineering guidelines, bring professional equipment, and hire a local guide. 2. **Free diving training (non-extreme deep diving)** Experience a closed-air dive under the guidance of a professional instructor and feel the body's primitive desire for oxygen, but avoid trying or challenging the depth record alone. --- ### 🧠**Controllable psychological critical experience** 3. **Sensory Deprivation Tank (Floatation Tank)** Floating in a completely dark and silent water tank for more than 1 hour may trigger deep thinking about the sense of self-existence, which is a safe physical and mental experiment. 4. **Disaster simulation courses (such as earthquake/fire escape training)** Participate in disaster emergency drills of professional institutions, activate survival instincts in simulated extreme environments, and learn practical skills at the same time. --- ### *** Observation perspective of Science and medical Care** 5. **Hospice care volunteers** In the process of accompanying dying patients, reflecting on themselves through the end of others' lives requires professional training and psychological construction. 6. **Medical anatomy class or pathology museum** By understanding the structure and diseases of the human body, we can face the material nature and limitations of life (we need to confirm our own psychological tolerance). --- ###️️**Important reminder** -**All activities must be legal and exclude the tendency to self-destruction. **, true awakening of life does not need to be at the expense of physical risk. -**Recommended alternatives**: Read philosophical works such as "The Meaning of Living Life" (Victor Frankel), or express thoughts on life and death through meditation and artistic creation. -If there is a depression or existential crisis, it is recommended to seek professional psychological counseling (the crisis intervention hotline is also a brave choice). --- Life and death are one. Perhaps the really important thing is not to touch death, but to live every moment with awareness of the end.