1 Having high or low cholesterol does not exclude a person from donating blood. 2  Potential blood donors may be temporarily prevented from donating if they have a low level of iron (hematocrit) in their blood.
Headline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.eadline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.
To achieve temperatures of 200Â°F to 210Â°F, the oven should be set to about 300Â°F. Because meat is a poor conductor of heat, moist heat that is transferred into the meat during cooking tends to remain in the meat, where it slowly breaks down the tough fibers in the meat. Braising Meat.