Instructions:
Guess the correct preposition. Choose your answer on the word pool.
Comment down your answer.
Sleeping _______ the dark is crucial for our health. Sleeping with the light_______ could be bad _______ us. We could get diabetes or heart disease. About 40 percent _______ people sleep with a non-natural light, like a television. The worst thing is sleeping with the main light.
Sleeping _______ the dark is more difficult _______ people in cities.
An expert _______ sleep medicine said it is healthier to turn off lights when we sleep. She studied the blood sugar levels _______ 20 people. Those who slept with a light _______ had higher sugar levels than those who always slept _______ the dark. Light makes the brain active. It raises blood sugar. We should turn off the lights or wear an eye mask.