I serve Master however He wishes for me to do so. This can be sexual service, which is pretty self-explanatory. It can be physical. My Master happens to have several birth defects so I am often the one who has to do some heavy lifting and carrying when He's unable to do so. I have tasks that He has me do. I am there for Him whenever He needs me.

Each Master is different. Some are more strict than others. For example, the other night I was speaking with a Dom who told me that when he and his sub go out to dinner, her eyes are to never stray to anyone else but that she is to focus all of her attention upon him. My own Master would not demand that of me, because that is not His way. Neither way is "better" than the other. They are different men and expect different things from their subs. I've had some very strict Masters in the past who were very controlling and demanding. My Master now is more laid back, because that is His personality.