How long is it okay to go without water? The critical facts
                                
                                
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                                    4 min read                                
                            
                                Most experts cite the "rule of threes" in survival, stating a person can only last three days without water. While this is a helpful general guideline, the exact timeframe for how long is it okay to go without water can vary significantly based on environmental conditions, physical activity, and individual health factors.