GoBe U: What Is Water Deficit and How Does This Feature Work?

The Water Deficit feature helps you notice when your hydration level drops and supports maintaining a healthy water balance.

When GoBe detects reduced hydration, the band may send a “DRINK” vibration alert, and the app begins displaying your current Water Deficit value.

What Does Water Deficit Mean?

It is important to understand that Water Deficit does not represent your total daily water shortage.

Instead, it reflects your body’s current need for fluids when hydration falls below the normal range.

In other words, Water Deficit helps estimate how much fluid you may need to replenish at the present moment.

How Is Water Deficit Related to the Hydration Graph?

Hydration level and Water Deficit are related, but they represent different metrics.

• When hydration is within the normal range, Water Deficit is considered to be zero.
• When hydration becomes negative, the system starts calculating Water Deficit.

However, the exact deficit value cannot be determined directly from the hydration graph.

What Do the Numbers on the Hydration Graph Mean?

The numbers displayed near the droplets and above the graph represent water expenditure.

They show the rate at which your body is losing water during periods of reduced hydration.

Keep in mind:

• the graph reflects water loss;
• Water Deficit indicates how much fluid is recommended to replenish.

These are different metrics and are calculated separately.

How Is Water Deficit Calculated?

When hydration becomes negative, the system establishes an initial Water Deficit value.

This value is based on the glass volume configured in the app settings.

For example, if your glass volume is set to 300 ml, the initial Water Deficit will also be set to 300 ml when hydration first becomes negative.

After that:

• if hydration remains stable, the deficit changes very little;
• if hydration improves after drinking, the deficit decreases;
• when hydration returns to normal, the deficit resets to zero.

Why Is Glass Volume Important?

The glass volume setting affects more than just the display.

It also influences the Water Deficit algorithm.

Changing the glass volume affects:

• the initial deficit value;
• drink reminder logic;
• fluid replenishment recommendations.

We recommend setting the glass volume to match the amount of fluid you typically drink at one time.

Why Doesn’t the Deficit Always Decrease After Drinking?

After drinking water, Water Deficit does not always decrease immediately.

If your body continues losing fluids rapidly, for example:

• during exercise;
• in hot weather;
• due to heavy sweating;

the deficit may temporarily remain unchanged or even increase.

This happens because the algorithm takes into account both water intake and water loss.

Recommendations

Use Water Deficit as a guide for maintaining regular hydration.

In most cases, it is better to drink your usual portions of water at reasonable intervals rather than trying to compensate for the entire deficit at once.

This helps your body absorb fluids more efficiently and maintain a healthier hydration balance.