This condition consists of a variation or worsening of sleep apnea, a disorder in which breathing repeatedly stops or becomes very shallow during sleep. It turns out that such factors have a clear impact on sleep apnea data. Diverse studies from recent years have demonstrated a correlation between tobacco use and sleep apnea. According to the new study, changes in sleep schedule, such as staying up or sleeping late on the weekends, can aggravate sleep apnea. Sleeping 45 minutes longer increases the risk of sleep apnea worsening by 47%.