If you are 4' 10 and weigh 100 pounds what is the best way to lose 5 pounds?

Right now, your BMI (Body Mass Index) is about 21. This is very much into the "healthy" range. You don't need to lose any weight. If you wanted to lose 5 pounds, try some simple things. Maybe cut out some extra calories from your diet, like don't eat ice cream or have that chocolate bar as a snack after dinner every night. Pair that up with some more exercise, like running, jogging, walking, biking, yoga, or so much more. Drink lots of water and make sure you are burning enough calories through exercise.