[ad_1] <br><br>Researchers say the type of light students sit under all day may shape sleep, focus and hormones. <br>[ad_2] <br> <br> <br> <br><a href="https://www.newsnationnow.com/health/classroom-lighting-affecting-kids-biology/" style="font-size: 12px;color:#D5DBDB" target="_blank">Source link </a>