This exercise is still commonly used, even amongst trainers who should know better. A lifter suspends himself across two benches while his trainer or lifting partner loads several 45-pound plates across his lap.
The idea of high-frequency training rises in appeal periodically, usually based on circumstances. Maybe you live next to (or work at) a gym and see the possibility of training every day. Or maybe a global pandemic puts the gym entirely off-limits, and you’re finding that you have plenty of time to kill each and every day in your home gym.
Exercises aren’t contraindicated – people are. That means it’s on us to choose the right exercises for the right body type, injury history, and goal. But there ARE a few commonly botched exercises that are inexcusable, and that transcends simply not having the right “build” for it.
Athletes of any sport would do well to remember that when it comes to preparing the body for activity, there are certain goals we must achieve, basically across the board.
There’s a time and place for everything and that includes using some instability training for the chest. Here’s the only rule about instability training: Make sure you do your stable movements first so that your chest is pre-fatigued before you hit it with something unstable.