Obesity is a term that means you weigh at least 20% more than what is considered a normal weight for your height. It makes you more likely to have conditions including: Heart disease and stroke.
An Isotonic Solution creates a mild, less concentrated salt solution of 9mg of Sodium Chloride per mL of water, which has a similar salt concentration as your body and may be more comfortable to use for some people initially compated to the more concentrated Hypertonic solution.
A hypertonic solution is one with a higher concentration of solute than some other specified solution (and which therefore has a higher osmotic pressure than the other ... Hypertonic solution Online Biology Dictionary