Kids that are tired all the time, zoned out, or simply not interested in participating in many activities can get labeled as lazy, but there could be a powerful explanation to this behavior: sensory low registration. Learn what it is, how to know if your child has it, and what to do about it.     He’s slumped in his chair, half folded all over his desk. His head is resting on his arm while the teacher stands in front of the classroom teaching....