Stamina is the energy needed to move the Hamstermobile in the game Ham Race. It is displayed to the bottom left of the screen. It is built of 20 squares. When the Hamstermobile moves, the rightmost square shrinks to a dot and proceeds to the other square nearby. When all the squares are shrunk, it can't move anymore unless they grab a seed or rest by releasing the mouse button(s). In standby mode, it regenerates 6 squares/sec. A seed regenerates 6 squares that have been lost. Stamina is used more slowly if only one hamster is in motion.