1How much water do we need on a daily basis?
The National Research Council (NRC) uses a sliding scale of 1 milliliter of water for every calorie burned. The NRC says the average man — who burns about 2,900 calories daily — needs 2,900 milliliters, or about 12 cups, of water each day. The average woman — who burns 2,200 calories daily — needs about 2,200 milliliters, or about 9 cups, of water each day. For your own calculations: One measuring cup (8 ounces) of water equals 236 milliliters of water.
2How much water should I drink when I exercise and when?
The American College of Sports Medicine (ACSM) recommends drinking about 500ml of liquid 2 hours before exercise and drinking early and at regular intervals during exercise (150-240 ml every 15-20 minutes).
3 Are athletes at risk for dehydration?
Mild to severe dehydration commonly occurs among athletes, even when fluid is readily available. Consequently, it is in the athlete’s best interest to adopt fluid-replacement practices that promote fluid intake in proportion to sweat loss.
4If I’m not thirsty does that mean that I am properly hydrated?
Vigorous exercise may delay the thirst mechanism, making it difficult to replace fluid loss without a plan for periodic consumption. Athletes should become accustomed to consuming fluid at regular intervals (with or without thirst) during training sessions so that they do not experience discomfort during competition.
5What are some of the effects of dehydration?
Increasing dehydration, due to inadequate fluid consumption, directly impairs stroke volume, cardiac output, and skin blood flow, which results in larger increases in body core temperature, heart rate, and ratings of the difficulty of exercise.
6Is it possible to drink too much water?
Hyponatremia (low blood sodium levels) as a result of over-hydration, has become more and more common in endurance athletes, and many governing bodies are changing their hydration recommendations accordingly. To prevent complications, endurance athletes are advised to be aware of the effect of dehydration as well as over-hydration and plan their fluid intake according to their individual needs.
7Do most people drink enough water?
The average person is chronically dehydrated and consumes only 4.6 servings of water per day.
8Can drinking water actually raise my metabolism?
DRINK LOTS OF water and keep yourself on schedule” is an old health adage. Recent studies have demonstrated that drinking water is, indeed, associated with a substantial physiological response. Drinking 500 ml of water increased metabolic rate by 30%. The increase occurred within 10 min and reached a maximum after 30–40 min. The total thermogenic response was about 100 kJ (which equals about 96 kcal per day or a loss of 5.5 lbs per year).
9Is dehydration a serious health issue?
Dehydration is one of the ten most common causes for hospitalization among Medicare patients. In 1991, 6.7% (731,695) of Medicare hospitalizations had dehydration listed as a principal diagnosis, costing Medicare more than $446 million in hospital payments. Most importantly, the study revealed that about half of the people over age 65 who were hospitalized with illnesses accompanied by dehydration die within one year of admission.
10What are some of the benefits of proper hydration?
  • Transports nutrients and oxygen to cells
  • Ensures adequate blood volume
  • Protects against heat exhaustion
  • Acts as insulation in the cold
  • Regulates body temperature
  • Cushions joints
  • Suppresses appetite
  • Assists the body in metabolizing stored fat
  • Relieves fluid retention problems
  • Reduces sodium buildup in the body
  • Helps to maintain proper muscle tone
  • Rids the body of waste and toxins
  • Relieves constipation
  • Helps convert food into energy
  • Maintains strength and endurance
  • Protects organs
  • New research indicates that fluid consumption in general and water consumption in particular can have an effect on the risk of urinary stone disease; cancers of the breast, colon, and urinary tract; childhood and adolescent obesity; mitral valve prolapse; salivary gland function; and overall health in the elderly. Dietitians should be encouraged to promote and monitor fluid and water intake among all of their clients and patients through education and to help them design a fluid intake plan.


1My new HydraCoach screen is blank and won’t start. Why?
Be sure you have removed the battery tab. To do so, unscrew the cap (counter-clockwise) and lift the bezel off of the bottle. To locate and remove the battery tab, use a screwdriver to open up the battery door but be careful not to loose the screw.
2I removed the battery tab and programmed my HydraCoach but it is not registering fluid consumed. Why?
Be sure to press the Start/Stop/Reset button to “start” the hydration program. A flashing stopwatch icon at the bottom right on the screen will appear indicating that the hydration is “on”.
3Why does the Low Battery Icon activate when the battery is new?
The computer may be too cold and causing the operating voltage to drop to a point where it activates the Low battery Icon. When the bottle warms up, the flashing icon should disappear. Return the computer to a less extreme environment.
4How do you drink from the HydraCoach?
Follow the guidelines given in the manual. Teeth must be located in the indents on the mouthpiece. Gently bite down so that the slit in the tip of the mouthpiece opens. You can pinch the mouthpiece with your fingers to see how this works. When you get the bite correct, then suck water up the tube and in to your mouth with deliberate and purposeful sips. You should hear the sound of the impeller spinning. Also, make sure that the bottle is vertically oriented in nature. Do not tip the bottle up to drink as you would with an open mouth cup or squirt bottle.
5How accurate is the HydraCoach?
One should reasonably expect +/-10%, or about 90% accuracy. However, drinking from the HydraCoach is somewhat of a learned behavior and for many, accuracy will improve with time. In order for the HydraCoach to properly measure fluid consumption, the magnetized impeller within the drinking tube must spin with every sip. Low intensity sipping may cause inaccuracy. So, take good strong sips, listen to hear the impeller spin and enjoy all the benefits of maintaining proper hydration.
6My TAC value rose/jumped and I didn’t drink from the bottle.
Certain conditions and environments that subject the bottle to constant vibrations and sudden motions may have an effect on the bottle’s electronics causing the TAC value to rise and display incorrectly.
7I’m not sure if the impeller spins when I drink. I am I doing something wrong?
Listen for the turning impeller. You should be able to hear it spin. If you’re not sure, look in the mirror and watch for the impeller to spin as you drink.
8Why do I have to suck so hard to drink from the bottle?
Hard sucking is oftentimes caused by the air valve in the cap not allowing air in to the bottle quickly enough to displace the consumed water resulting in a vacuum effect. The air valve needs to be “broken in” and may be done so by rubbing your finger/fingernail across its surface to open up the slits and allow the flaps to move freely.
9Why can’t I start/stop the computer?
The computer is likely in the Clock/Date function screen and the computer cannot be started or stopped from this screen. Pay special attention to the Stopwatch Icon. If the animated segments are spinning around inside the Stopwatch then the hydration program is active. If the Stopwatch is visible but not animated, then the hydration program is paused. If the Stopwatch Icon is not visible at all, then the computer is reset and ready to be started.
10Why can’t I reset the computer?
The hydration program must first be stopped or paused in either of the first two hydration mode screens (not the Clock/Date screen) before you can reset the computer. The computer can not be reset while the hydration program is running. Hold down the Start/Stop/Reset button for two seconds to accomplish this.
11Every function screen is flashing, what is going on and how can I stop it?
You have reached the hydration program’s 24 hour limit. Note: The TET function will read 24:00:00. You may now review your 24 hour hydration performance in each of the function screens. If you are ready to begin a new hydration program, simply press and hold the Start/Stop/Reset button for 2 seconds in any function screen and all data will be reset. Press the Start/Stop/Reset in either of the first two hydration mode screens (not the clock/date screen) and a new hydration program will start.
12How do I change information in the computer?
To redo the Initial Setup, simply press and hold the Start/Stop/Reset button and the Setup Button for 2 seconds. This Initial Setup mode walks you through the entire programming sequence as if you had just inserted a new battery. Otherwise, it is possible to make quick changes more relevant to the hydration program directly from their corresponding function screen. By pressing and holding the Setup button for 2 seconds, you are able to manipulate your weight and PHG from the first two hydration program screens, and the time and date from the Clock/Date screen. This can be done while the program is running, so changes on-the-fly are entirely possible.