He speculated, "because of more activity and maybe caffeine use and maybe not enough exercise, that it just made people more susceptible when we would spring forward as opposed to falling back.''
Listen to Dr. Kim LeBlanc:
The doctor said the people who are night owls tend to be impacted the most and those who are already sleep deprived suffer more by losing an hour of sleep.
''If you drink caffeine beverages, drink them in the morning but avoid that in the afternoon and evening,'' the doctor explained.
Dr. LeBlanc suggested trying to get to bed early, because for some people the impact of losing an hour of sleep can last for several weeks.
The time change takes place 2:00 a.m. Sunday.