Slow running vs. fast running

slow or fast both runnings usese same amount of calories but just the speed and time changes if you are looking to gain weight then you should go for a slow run and to lose weight go for a fast run.
Weight is incresed when you run slow and then have rich carbohydrate ,protein and faty products , while vice versa if you run fast and have carbohydrae and protein but less fats then it will losen you weight