About 27% of people in the world have permanent trouble sleeping while 73% experience this problem occasionally. Sleeping difficulty isn’t always related to health problems. Some normal evening habits actually have a negative impact on our sleep and sometimes even lead to insomnia. We present you some things you shouldn't do before bedtime if you want to get a good night’s rest. Nicotine in cigarettes stimulates brain activity, increases the heartbeat and blood pressure. This is one of the major causes of poor sleep. Even if you manage to sleep, the quality of your sleep won’t be satisfactory. Smokers are at a greater risk of suffering from insomnia than non-smokers. To fall asleep very quickly, try not to smoke 1.5 or 2 hours before bedtime.