Winter Conditions Could Agrravate Sleep Apnea
Sleep apnea appears to be worse during the winter months.
Brazilian researchers tracked thousands of people who were tested at a sleep clinic.
During the winter patients stopped breathing in their sleep an average of 18 times per hour - compared to 15 times an hour during the summer.
Doctors aren't sure why but speculate that winter related conditions like colds can aggravate sleep apnea.