Answers:
It could be something as simple as fluid in the ear or something as primary and a brain tumor. There is a condition to be precise also call vertigo that will basis dizziness for no purpose. For this condition at hand are exercises that you can do to facilitate it. I suggest seeing a doctor for a proper evaluation.
dizziness is above all cause by lowering or elevation of blood pressure see docter and own bp tested also sugar level
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dehydration, inner ear trouble, brain tumor a moment ago to mark a few.
There could be a great deal of things cause it... i.e. medical conditions, etc. Ususally, though, I've found most dizziness is due to dehydration (especially in the morning, since you jump 7-8 hours lacking drinking water), not ingestion adequate, insufficiency of iron due to not getting adequate protein, or not getting adequate sleep.
Quit the spin classes and lay stale the smoke.