Energy drinks apparently start to help one’s muscles work as soon as they make contact with the tongue.
That weird finding, via which the receptors of the tongue somehow inform one’s flagging muscles that ‘help is coming’, is the basis of today’s invention.
For those who find their lives threatened by exhaustion (such as soldiers, explorers or firefighters) it takes the form of a steel water bottle with a lockable lid (and an inaccessible, recessed valve).
The lid contains a timer device which opens a spout for say one second every half-hour (as determined for the operation concerned). This allows someone to take very short slurps of the sugar water inside, enabling them to keep going whilst preventing them from simply draining the contents.
It might even be possible for a version of the bottle to open the spout in response to radio signals from base, in order to maximise the chance that the bottle carrier can get him/herself back home in one piece.