I have been losing weight since spring but for some reason it is getting really hard to lose a few more lbs. I have been stuck at 289 lbs for the past few weeks. I do treadmill and I changed from gradually speeding it up to jogging at 5 mph for 5 minutes every 10 minutes. I'm a just plateuing and it will eventually go down? Humans don't try to store fat for the winter right?