The main danger when exercising with levels this high is the possibility of ketones in the system. If you can rule this out, gentle exercise is fine and will actively help to reduce levels. Your performance will probably be impaired slightly due to elevated levels though. I would begin to investigate why I was this high in the first place.
Thanks Danny! I think I might just go for a leisurely swim. I've got a review on Monday. My hba1c is 10.9 despite 4 xgliclazide daily I'm 34 and not overweight so my docs suspects its not a classic type 2. Metformin was pretty pointless and it seem gliclazide is too
@Jaxx01 I have found that a steady pace of exercise, be it walking swimming etc helps to lower the BS levels, where as really active exercise tends to raise them. I think if you take a leisurely swim you should be fine. I'll keep my fingers crossed your review with the Dr goes well.