Remember the ‘functional training’ craze when people were squatting and pressing on all kinds of unstable surfaces? Barbell squats on Swiss balls? The thought was they achieved better muscle activation and being unstable was more ‘functional’.
The idea of adding instability to lifts is sound, but in some cases it is poorly executed and dangerous. Some of these attempts at instability training belonged more in the circus than the gym.
But there is a better way. A way that gives you all the instability you can handle while improving your strength and technique at the powerlifts.