Human Survival Limits (Approximate Maximums):
• No drinking water: 3–5 days
• No food: 40–70 days
• Without oxygen: 3–5 minutes
• Brain without oxygen: 4–6 minutes
• No sleep: 11 days
• Extreme cold exposure: ~30 minutes
• Maximum heart rate: ~220 beats per minute
• Holding breath: Up to 24 minutes (trained individuals)
• Walking continuously: ~30 hours
• Complete isolation: ~7 days (before severe psychological effects)
• Extreme pain tolerance: A few minutes
• Longest human lifespan (verified): 122 years
• Longest urination ever recorded: 2 minutes 42 seconds