I cannot understand at all why someone's spouse would be so upset that she wanted to be fit and healthy.
Only you can tell if you really are more hyper after exercise rather than without it, but I have to tell you that usually, the opposite is true and it is the reason why slightly hyperactive, overly anxious people such as myself exercise. I think his reasons are excuses.
I agree with the first poster that the roots of his unhappiness with you lie elsewhere, this is just an obvious excuse he can attach his unhappiness to. I also think that his obnoxious behaviour towards you has so much more to do with him than with you. There are things in his own life that are making him unhappy and frustrated and he is taking it out on you.
This constitutes emotional abuse. I have a pamphlet on it produced by the University of Michigan Health Centre right here by my computer, picked up recently at a visit to my doctor's. I recognized through browsing through it that I am subjected to this kind of abuse by my husband when his own life disappoints him. My therapist told me it was really nothing to do with me, only with him.
Personally, I refuse to be anyone's verbal punching bag and when he goes off on his tirades, I do my utmost best to turn a deaf ear to it. It is highly unpleasant and makes me feel shitty, but I don't want to get drawn into arguments with him or reduced to that level. I usually take myself off out to the bookstore cafe to drink coffee and read on my own, or I hit the gym, so that I don't allow his nastiness to make me hate myself and punish myself for his bad behaviour, which I know I have a tendency to do.
Your husband is the one who needs to see a therapist to work out the sources of his unhappiness and sense of failure, because you are not the source. You need to do your best to be your normal pleasant self, paying him attention when he deserves it and not because he behaves badly, and doing what makes you happy. This does not mean that you shouldn't spend "quality time" with him, but his inability to entertain himself when you work out is his problem, as is the fact that he feels the need to be the centre of your attention.
Protect yourelf against his verbal tirades. You deserve better.
Clare