Probably about the same as you. But the difference is that my answer would have been exactly the same 2 months ago, or 12 months ago, or even 10 years ago. Just because you have weak muscles, it doesn't mean there's a neurological reason for it. Sometimes it's because that's an activity you don't do very often. As someone said very eloquently a couple of days ago, when you hear horse hoofs coming, it's usually a horse.Seriously, how often do you hold your arm out at a 45 angle and leave it there? I know I don't do that very often. I can't ice skate either. It doesn't mean I have an ice skating disease.