In my experience, the older a follower is, the more they tend to be less precise in stepping to the music, no matter how fast or slow the music is. Not that there aren't any who can do so pretty much perfectly, but with the inevitable consequences of time, the lag between hearing the music and stepping tends to widen. Additionally, they tend to feel too heavy or too light - probably a consequence of not making up enough for any loss in physical ability, balance or body coordination in general, or just an inability to do so. Or it could just be a matter of mass.