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.
you should be drinking at least 2 litres of water each day more if you can do it. water can be a very boring drink so why not try diluting it with some fruit flavour diluting juice, this makes it easier to drink or also buy already flavoured water.