What is a good way to get prepared for running a mile?

In gym class we have to run a mile in a few weeks. Im not used to running. Any tips on how to get prepared for running a mile?

Need help on training for cross country?

So I’m thinking about doing cross country or soccer next year for a sport in the begining of the year to have something to do and I’m leaning towards cross country. But the only problem is i’ve never really run before, only a few miles in gym class in middle school every now in then. Next year I’m going to be a sophomore and I wanted to know what exercises and what schedules I should start doing over the summer to increase my endurance?

How long will it take me to look thin, slightly muscular (for a girl), and lean if I am training for cross?

country in high school (so I will be running about 3 miles 4 days a week), if I cut the sugar/sweets/chocolate/etc, and I cut refined white flour products like biscuits and white bread buns from my diet? I probably eat about 1300 calories a day of wholesome foods, maybe having 1500 on Saturday for a splurge. I am trying to eat lots of meat, such as eggs, fish, chicken, venison, and beef because I heard protein contributes to muscle building? Oh, and I do have a gym class too for an hour 4 days a week.