Hydration

Question 1

Define hydration.

Answer 1

Having enough water (water balance) to enable normal functioning of the body.

Question 2

Define dehydration.

Answer 2

Excessive loss of body water interrupting the function of the body.

Question 3

Define rehydration.

Answer 3

Consuming water to restore hydration.

Question 4

Why do we need to drink enough water?

Answer 4

It assists with the body’s functions. It helps with reactions, lubrication and maintains our bodies temperature.

Question 5

How much water should you drink per day?

Answer 5

8 large glasses.

Question 6

What does how much you should drink depend on?

Answer 6

The environment (e.g. a desert) 
The temperature (you need to drink more when it is hot) 
The amount of exercise/activity you are doing (the more exercise you do, the more you need to replace water - this is called rehydration).

Question 7

What are the effects of dehydration?

Answer 7

• it thickens the blood (increases viscosity) which slows blood flow down
• the heart rate increases meaning the heart has to work harder. This can cause irregular heart rate (rhythm)
• Reaction time increases. It gets slower and general reactions are poorer
• an individual may suffer muscle fatigue and/or muscle cramps.

Question 8

What is the rapid recall for dangers of dehydration?

Answer 8

THRST
TH - thickens blood
RS - reactions slow
T - temperature increases.