For as long as I can remember I would fast during Ramadan, for 30 days from sunrise to sunset no food or water. Few years back I could still train fine, but the last 2 years or so, its been a real hassle, last Ramadan I hardly trained. I most likely will not be fasting this year and later, as it messes so much with my training and how I feel in general, and I'm dealing with some personal religious issues right now, so I dunno LOL I'm over it!