My hands haven't stopped shaking after exercising?

[Rarny]

I went to a pretty intensive boxing class night, and afterwards my hands were shaking so hard I couldn't write. It's been over 20 hours since the class finished, but my hands are still shaking. I have never experienced anything like this after exercising before. It isn't from lack of food, I've eaten regularly since the class. The shaking is bad enough that doing my makeup and putting my contacts in took an hour longer than usual. Please help me out!