Oh, don't you nevermind them. Be proud that you are out there doing something good for yourself. The other day I saw a bigger guy on a bike. He was moving slowly, apparently having a hard time. What I felt when I saw him was inspiration. I SOOOOO wanted to encourage him on and say "YOU GO, GUY!" But I didn't for the reasons you stated. I didn't want him to think I was sarcastic. I didn't want to hurt his feelings if he took it wrong. But you know what, Eelozano? "YOU GO, GUY!" and remember that which each pedal stroke, each breath, each time someone says something negative, you are just one step closer to a better, healthier, happier you. Keep on going, don't stop and be very, very proud of yourself.