These 6 dangerous nighttime habits can ruin your sleep and wreak havoc on your health.Get better sleep tonight by quitting these habits immediately:1. Carbs and sugar before bedGrowth hormone rises at night, but is blunted by a rise in blood sugar. This hormone helps you burn fat, repair tissues, and build muscle mass. A massive blood sugar spike before bed can interfere with your sleep and cause grogginess, fatigue, cravings, and irritability the next day.2. Sleeping next to your cell phoneYour