Herein is disclosed an apparatus and method for delivering a fluid to an individual in such a manner that sloshing of the fluid is substantially suppressed, even when the fluid has been only partially consumed. The apparatus includes a reservoir for containing the fluid and a valve in fluid communication with the reservoir. A biasing mechanism exerts a force upon the reservoir, causing it to contract and force fluid through the valve, when the valve is opened. The biasing mechanism and reservoir are housed within a body, according to some embodiments.