I'd say it's to set up a clear goal.
Yoga can help relax your mind and help with your inner zen. It also helps with your focus. Meditation has the same effects
Drink 15 glasses of water.
You can pour 15 glasses of water maybe in to 5-9 bottles.
Percentile Score is the score based on the relative performance of candidates who have appeared for the exam. To calculate a percentile score, the marks secured are converted into a scale ranging from 100 to 0 for each session of examinees.