Why can we donate blood but not our fats?!? Arghhh! I am getting very upset these days because I have been trying so hard to lose some weight but it just won't happen. I have tried jogging like crazy. I tried cutting back on calories. I tried skipping on processed carbohydrates. I even tried fasting. I am really getting so upset I can buy a truckload of fat burning products really soon. I know some who lost major weight just by running on the treadmill. How come I haven't?