A random physical action category is displayed (e.g., "Jumping Jacks")
Teams take turns declaring how many repetitions of that action they can do within 30 seconds, always stating a higher number!
If a team doubts the opposing team can meet their stated number, they can call "BS"!
If "BS" is called, the challenged team attempts to perform their declared number in 30 seconds. Succeed, and they get the point; fail, and the calling team earns the point!