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I always tend to have enough food at home that would last me two weeks easily. I would fill my bathtub in case things start to get more serious. That should be enough drinking water for some time.


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Wow, 2 weeks of water is about 20 liters per person! That's a lot of water to have sitting around. Two weeks of food is kind of easy if you shop at Costco :)

I think that is exactly what is recommended. If you got two weeks of water then you are good. As you said people should have it anyway, but a lot of people don't (myself included).

The average person needs 7 gallons of water, 28 cans of meat, and 14 cans of fruit per 2 weeks. For a month long stockpile that comes out to 21 gallons of water, 84 cans of protein, and 42 cans of fruit. However everyone is probably stocking up on bananas and potatoes and fresh meats which will start to go bad after a week.

About 8.5 gallons per day or 32 liters. A few gallons per day in an emergency is plenty for drinking, cooking and hygiene so 4x that much is a good start.

If you drink ~19 litres (5 US gallons?) of water every day you will not survive long. That’s about an order of magnitude more than is recommended under normal non-strenuous conditions.

8 ga of water per person per day is completely insane in disaster scenario. 2-3ga for drinking a day? Medical professionals recommend less than 1 for a normal person.

You’d be dead, without water for two weeks. Slight difference between a withdraw and a biological need, no?

You only had water for 20 days? How do you do that?

I walk to the water cooler or toilet every 2 hours, and take a longer break to watch the sunset in the evening if the weather's suitable. Perhaps I drink a lot of water compared to most, but the last I heard was that medical advice is to drink more water.

GP listed a range. 2 days probably won't kill most people if they're starting at a healthy point and aren't too active or in an arid environment, but it will probably kill a lot of people if they start off somewhat dehydrated or are too active (by necessity or stupidity) during that period. The usual number tossed out is 3 days, but it's not like people will magically all drop dead after 72 hours from their last drop of water. It's an average or expected value.

One week I measured how much water I needed to clean myself top to bottom: two glasses.

I eat low and don't feel hungry (although I don't suffer cold which drains energy fast)

I agree that it can be daunting but I think it's not the quantity it's the regularity of supplies.


taking 20x the recommended dose of water (3-4 liters daily - 60-80 liters to compare) will kill you too.

So you're volunteering to just drink water for a month? I want to see what happens.

Disrespectful snide aside, probably 8-10 weeks with water supply, dependent of course on your excess body fat.

I drink may be two liters of water per day. Unless Google lies to me, 5 gallons is almost 20 liters which would be enough for 3 weeks for me with rationing.

You can drink two liters but you can't store them. You'll be going to the toilette pretty soon and losing it.

Uh, do you mean two weeks of only water? Do you do this for weight loss? Do you work out? I would be very afraid to mess-up my metabosm. How do you prevent that?

I usually do. I have a 2 liter water bottle that I fill up at least twice a day. Though ironically with the heat this summer, I've been exercising and drinking less.

I would drink water for 5 days. It's not too difficult. The hardest part is the boredom. I'm quickly reminded how much of my life revolves around food. Farmers market, grocery shopping, happy hours, cooking dinner, work lunches, events, etc. You suddenly have all this free time. For me, I just play a lot of golf to take my mind off of it.

If you want an easy version, look up fast mimicking diet by Dr. Longo. Prolon sells premade kits.

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