Here's where things get fun. Just like the number of reps, 3-6 sets is the best range of volume for this training method. If you like your workouts paced like clockwork, take 30-60 seconds rest between each exercise.
The natural attraction between positive and negative keeps the ions surrounded by water molecules and therefore dissolved in solution. Many biochemicals are either polar molecules or charged ions (or both) so water makes an excellent solvent for them.
hydrogen bond all so cause the water to be polar, water are slightly different in charge and that cause the water to become a polar molecule, and that allows it to dissolve alot of the chemicals and other stuff, people call the water universal solvent.