A study says we lose hundreds of millions of dollars during the daylight saving time transition. Daylight saving time ends at 2 a. Across most of the U. More people have been calling for an end to daulight practice of daylight saving time, and numerous studies have found links between the time change and negative consequences. Researchers have linked daylight saving to increased risk of heart problems like strokes, heart attacks and daylighy fibrillation. Women undergoing in vitro fertilization and had a prior pregnancy loss experienced higher rates of miscarriage during daylight saving time. The start of daylight saving time sees mpney measurable increase in criminal sentence lengths, while the end coincides with a decrease in assaults, studies. Teens lose sleep on school nights after springing forward.