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They also seem good in preventing spinal injury before it occurs. The only problem is that it requires a lot of research and only things like the US armed forces want to help with that.
There's alternatives. The exoskeletons could have psychological encouragement modifications. It could shock you when you're slacking, maybe inject you with stimulants. If it senses you are doing a good job, it should vibrate or something.
It seems easier just for the exoskeletons to make the movements for you, and that way it's impossible to slack, because you just let the exoskeleton walk and pick stuff up with your arms.