Stamina (stat)
From SmashWiki, the Super Smash Bros. wiki
At the start of a match, each Pokémon has 120 points of stamina. When a Pokémon is in battle, its stamina drops by one point every second. (This equates to about 2 minutes of stamina.) The Pokémon also loses a point of stamina for every attack it attempts. Once a Pokémon's stamina drops to 36 (that is, 30% of its maximum), its standing animation switches (see image) to signal fatigue. When the Pokémon's stamina reaches 0, its attacks drop in damage and knockback. Pokémon regain 2 points of stamina per second when not being used, and all Pokémon are restored to 120 (the maximum) when any one of them is KO'd.
This can be completely removed by hacking like the rotation after being KOed.
