When using a Survivor, look for a Frog Statuette. Then,
use your Special Move and click on the Frog Statuette to turn
into a frog. The frog will be invisible. Use all its stamina and
right click to change back to a human. You will have full stamina
instead of no stamina. However, you will also have the speed of
the frog and its slow stamina consumption too. To disable this,
change into any animal without using your Special Move. Then,
change back to human. Note: Your stamina will fall to zero again.