Eating salt raises the amount of sodium in your bloodstream and wrecks the delicate balance, reducing the ability of your kidneys to remove the water. The result is a higher blood pressure due to the extra fluid and extra strain on the delicate blood vessels leading to the kidneys.
tennis is a pretty hard sport to learn. For you to pass the tryouts for freshman year, you would need at least 1-2 years of practice. its impssible to learn this sport in 2 months.