I was only slim when I was super young. I remember being a teenager and becoming a bit overweight, my grandmother got concerned so she had me come to her house to get on a treadmill and lose weight. I got down to around 125 lbs. but once I became an adult and turned 20, I discovered FF and started purposely gaining since I loved being fat and wanted to get fatter. I don't plan on ever being at a healthy weight, I just love being obese! You shouldn't have to change for anyone else, you should be able to be comfortable in your own skin.
1 year