Giardia takes two days to kick in. Unless you are in a third world country, drink your fill, then book it to your nearest retailer that stocks Pepto. (Note: Pepto won't cure Giardia)

Ostensibly this would be something you would start pretty early on, not after you'd already gone a few days without water.

I love the shot of the guy barbecuing the hot dog.

"Oh my God, I'm starving. Good thing I have this empty egg carton, some charcoal briquettes, this little grill, and a hot dog."

Whether a carbis sweet (like table sugar or in fruit) or not (such as in bread or vegetables), all carbs are made from sugar.

Short term fasting has been shown to increase insulin sensitivity:

Exactly. An investment makes money for you WHILE you own it, not after you sell it. It's like buying stocks, which is NOT investing, it is SPECULATING.