The best way to gain weight really quicky weather it be for sport such as rugby, league or american football to just out of curosity or for scientific reasons. Is to concentrate mainly on your meats. Red meats such as steak and lamb are golden. You always want to try and eat as much as possible even if your feeling a touch full just keep on at it.
Another great way is to just rip into the pastry foods such as pies.
Another great way is to just rip into the pastry foods such as pies.