How to lose20-40 lbs?

asking for someone else.

So she is 5'3 and and weights 150 lbs in scho they are doing a dance section and she doesn't want to be over weight she has a slow metabolism and need to get it to be fast again what food will she need to eat and what to drink she doesn't get time in the morning to eat before school so what should she do . Please respond
How to lose20-40 lbs?
Post Opinion