Originally Posted by
DaveLeeNC
...... I weighed myself and my water bottles immediately after the ride, 7.8 pounds (of water, I assume) was gone.
So let's say I tend to lose 4 pounds of water per hour.......... I would assume that if it were hotter than today my 4 pounds/hour could/would go up - maybe a good bit. I only consumed one pound of water (2/3 of a 22 oz water bottle) on this ride..... (but I surely drank a ton of various non-alcoholic liquids).
I'm just wondering what other folk's "sweat rates" are and how folks go about replacing 4+ pounds of water per hour on longer rides.
I think your assuming way too much.
Your percentage of hydration is not static... although people to tend to have average hydration levels... they are individual and can vary greatly. As an example... I just checked my hydration/water percentage (I have a scale that does that) and I am currently 45.2% water. However... that can easily be as high as 55%. Depending on body weight... a fully hydrated body apposed to a recently sweaty body could easily vary a few pounds.
This input/output weighing doesn't really provide much information.... particularly in events that only last very limited times (2 hours) and where consummation isn't well controlled (like drinking: a ton of various non-alcoholic liquids).
Dehydrating isn't weight loss... and it is dangerous. There are plenty of posts here about how to stay proper hydrated. I'd read them over and give up on weighing water bottles.