Women's Weight Training Myth #2 - Exercise increases your chest size.
Sorry girls. Women’s breasts are composed mostly of fatty tissue. Therefore, it is impossible to increase breast size through weight training. As a matter of fact, if you go below 12 percent body fat, your breast size will decrease. Weight training does increase the size of the back, so this misconception probably comes from confusing an increase in back size with an increase in cup size. The only way to increase your breast size is by gaining fat or getting breast implants.
Women's Weight Training Myth #3 - Weight training makes you stiff and musclebound.
If you perform all exercises through their full range of motion, flexibility will increase. Exercises like flyes, stiff-legged deadlifts, dumbbell presses, and chin-ups stretch the muscle in the bottom range of the movement. Therefore, by performing these exercises correctly, your stretching capabilities will increase.