Exposure to cold temperatures and a low body temperature (hypothermia, a body temperature at or below 95 degrees) can also cause chills as muscles contract and relax to warm the body. Autoimmune and inflammatory disorders, as well as some cancers, can also cause a fever and chills.
American Express Serve Card: Prepaid, With A Twist. The American Express Serve Card is a unique prepaid card that offers a way to manage your spending as closely as you would with cash, except with a card. Here, letâs take a look what makes Serve different.
1 Online: Log into your account online at americanexpress.com and click on the âAmex Offersâ or the âAmex Offers and Benefitsâ tab. 2  Then, select the offer you want and save it to your Card. Then, select the offer you want and save it to your Card. 2  Once you save an offer, it will no longer be available to add to other Cards associated with your online account. 3  Mobile: Download the American Express App for iPhone and visit the âAmex Offers For Youâ tab under the âMembershipâ section.