Know I should be asking a doctor but I have been and he wouldn’t let me speak so it was a waste of time. Says it’s down to overtraining which I doubt as happens when just walking or moving.

Some of you my have been through this before.

I have been kickboxing for about 9 years and suddenly I have been going very light headed and dizzy to the point where I feel very weak and like I am going to throw up. I go outside to get a cool breeze and then if throw up I am out of the way. I have also notice my heart rate seems to be hitting around 215.

I am only training about 30 minutes when I first start to go dizzy and fate which is only stretching no actual training or working out. I also struggle breathing very quickly. I have noticed this happens when walking around my village. My coach can notice that something is wrong as they keep asking me every 5-10 minutes if I am OK. Has anyone else experienced anything like this. Or got any ideas on what to do.

He couldn't tell you anything without a complete work up to find the cause of your issues.

Dizziness and Nausea | MedGuidance (http://www.medguidance.com/thread/Dizziness-and-Nausea.html)

Suspend your work outs until the cause is diagnosed and proper treatments can be found. Something is wrong for sure, so see another doctor, or go to a hospital for a proper blood work up.

Did your doctor draw blood?

You should have a complete blood work done; possibly by another doctor. You don't say your age and that is a factor. Your symptoms indicate that you are extremely out of shape, but then, we don't know your age and cannot diagnose on the internet; you should realize this. I would discontinue strenuous exercise until you have a complete physical.

If this doctor is not talking to you, go to another.

If you are kick boxing, do you fight ? Lots of hits to the head ?

Also you should at least get an ekg (cardiogram). That's not too expensive. You don't say where in the world you live, or what your insurance is.