Definition of rappel for English Language Learners : to move down a steep cliff, rock, etc., by pushing your feet against its surface and sliding down a rope RAPPEL Defined for Kids
How much water you need to drink to get the most benefits depends on your diet, exercise routine, health and weather. You can start by aiming for the basic recommended amount for adults, which is 8 to 12 cups a day, according to Clemson Cooperative Extension, and making adjustments as needed.
The advice to drink at least two liters of water every day seems to be a piece of common knowledge that everyone knows, isn't backed up by studies, as far as I can tell. My own theory is that sailors discovered by trial and error that they needed a gallon of water daily to remain in good health.oodstuffs that have high moisture contents also contribute to our water supply. With our food we absorb about 1 litre of water a day. Our total required amount of water is 2,5 litres a day. If we drink enough water and eat enough water-containing food, this should not be a problem.