In reply to Tareq.

You just eat later than usually during ramadan and then you gorge on food. From reports it seems to be the gorging that causes issues. Personally I do fasting when I don't eat anything for a week. I do not have any issue with training etc during this time. I fast 24 hours once a week rest of days I fast for 16-18 hours. I have zero issues with training, working etc.