NFL practices this time of year are designed for maximum sweat production. Coaches are trying to build up stamina and endurance. Players push themselves to the limit, in pursuit of jobs and starting spots. It's also really, really hot.
And starting on Aug. 11, the beginning of the Islamic month of Ramadan, Minnesota Vikings safety Husain Abdullah(notes) will be going through these practices without the benefit of water. Or food. Or any other kind of hydration.
During Ramadan, observing Muslims like Abdullah will fast for 30 days; eating or drinking nothing while the sun is out. Food and drink are permitted after dark and before sunrise, but during the day, there's nada -- not a tiny little sip of water, or the smallest release of Powerade's mystic mountain blueberry.