I am also very embarrassed when I go out and bike. But I'll bet like me you are even more embarrassed when seen at a vending machine or loathing over a bowl ice cream while sitting if front of the TV. Please don't think I am being cruel. My point is our embarrassment helps maintain our obesity. People don't ridicule us at the vending machine because that is where they expect us to be. When they see us biking, well for some poor souls it just turns their world upside down. I find comfort in knowing that I am improving myself by biking. Don't allow yourself to be crippled by embarrassment. Do allow yourself the joy and gratification that comes with self improvement.