A more effective strategy is to cause the body to make less cholesterol by lowering your total fat intake. This strategy is much more useful because when you eat less saturated fat, your body doesn’t have to make as much bile to emulsify the consumed fat. Bile is 50 percent cholesterol, and it shows up in the blood with the fat you eat. If you eat less fat, you don’t need as much bile and your total body pool of cholesterol drops.
You may recruit more muscles than just the group you're focused on. Getting back to dumbbell presses, you not only use the pectorals, anterior deltoid (front of the shoulder) and triceps, but you may need other shoulder and back muscles to coordinate and hold your body steady during the exercises. Likewise, if you're doing standing front raises, you will naturally recruit muscles in your abdomen and back to steady your body.