Brown adipose tissue (BAT) , also known as brown fat, is one of two types of fat humans and other mammals have-the other type is known as white or yellow fat. Human newborns and hibernating mammals have high levels of brown fat.Brown fat's main function is to generate body heat.rown adipose tissue (BAT) , also known as brown fat, is one of two types of fat humans and other mammals have-the other type is known as white or yellow fat. Human newborns and hibernating mammals have high levels of brown fat.
California law requires that mileage reimbursement be paid no matter what the persons wages are. A recent court decision allows mileage reimbursement be paid as wages, but it also must be annotated on pay records what portion of those wages are for reimbursement.
Mileage reimbursements are worth more to you than deducting a mileage allowance on your tax return. A reimbursement for mileage pays you 100 percent of the mileage allowance. A reimbursement of 55.5 cents per mile for 2,000 miles of work-related driving thus means you get $1,100, all of which is tax free.