In this category is muscle response testing, which can be done at home or with a trained practitioner for best accuracy. (drjockers.com)
Whereas, if you are doing a movement like a plank, you're placing your body in proper alignment and there are a whole host of muscle responses at work. (pregnancyexercise.co.nz)
It can stimulate great muscle response and really help you build your endurance. (liftingrevolution.com)