Thank you so much for your reply and experience - I think my exasperation levels have now come down and my spirits have risen again - I’ve had diabetes for 34 years and sometimes the daily effort gets to me - I think i was just hoping that there would be some sort of formula for successful exercising. This morning my waking test was 6.8mmols and I ate a banana (had lantus - zero novorapid) made it through the run but immediate test afterwards was 13.2mmols. Better than sundays run but still too high. Next run on Thursday, so might try a little yogurt instead...many thanks for your encouragement- hope your next one goes better!