When I train a lot in one week sometimes I have trouble sleeping because of, what I believe to be called, "brain zaps". Just when I'm about to fall asleep I get a big jolt through my body like electricity that can make my body spasm. If any of you have had dreams where you're falling and then wake up with a thud, it's a similar sensation only I'm not asleep. I had them last night and it sucks. I also feel a little weak and shaky today also. It seems the term "brain zap" is related primarily to anti-depressant withdrawal, only I'm not on any nor have I ever been. This is not the first time I've them either, and the only commonality I can think of is that I've trained harder and longer in the days running up to it. However, a cursory googling doesn't show much relation to overtraining or too much exercise. It's from doing Muay Thai so I am worried maybe it's to do with getting hit, but I haven't taken any hard hits at all this week that have left me rattled. Have any of you had similar experiences? Aside from resting, which I plan to for the next few days, are there any ways to help or alleviate it? I've tried to keep hydrated and made sure I'm not low on electrolytes.