<span>While you sleep, your brain processes sounds on a basic level, sometimes causing you to wake or jostle. The impact of sound depends on the stage of sleep you are in.</span>
Your answer would be accurate so yes it's true .
He is able to express himself and exercises more. That’s why he’s happy.
Your personal fitness is what you make of it. A physically demanding job can be beneficial if you also support it with a nutritious diet and maintain proper health. But if your job is physically active and you eat more than needed, it does not matter how much you are working, because you are still consuming more calories than you are burning.