It shouldn't affect your arms anymore than biking will affect your legs, meaning in moderation you should be fine. Dear Joe, I wonder with you being a bodybuilder who has achieved massive results, if you could share with some of your readers on how you keep your body fat low. Perhaps one of the best things I have read about was the BMR Formula, where supposedly you can calculate a precise amount of calories broken down into proteins, carbs and fats based on your height, weight, age, and lean body mass. Maybe you have some concepts that you use which have brought you massive results which you would be willing to share. I have a real problem with anyone prescribing a formula or diet to any one individual.
Genetic variability exists in everyone.
I have a problem. When I train by myself, and I often do, I get motivated by trying to smash my personal bests, by trying to better myself. I'll watch bodybuilding videos or read the magazines. I just started into bodybuilding. I've lost 65 pounds in 24 months, and gone from a 30 pound bench press to 270 for reps.