"wii sports" also has a fitness test that calculates a player's fitness age (from 20 to 80 years old, 20 being the best possible). the test uses the player's performance in three randomly chosen challenges in each test from the training mode. the fitness test can only be taken once a day for each mii. fitness age takes into account a player's balance, speed, and stamina. fitness age results are graphed over one, two, or three months, with daily results on the wii message board.