Switching the times between  daylight savings and standard time twice a year  has a negative affect  on our health, disrupting sleep cycles.   Many adults already suffer from sleep deprivation and  the time change, disrupting our circadian rhythms can make this worse. Disruptions to the body clock have been linked with obesity, depression, diabetes, heart problems and other conditions. Levels of stress hormones that  boost heart rate and blood pressure, and  chemicals that trigger inflammation can increase.  Vulnerable people may be more susceptible to heart attacks. Studies have linked the start of daylight  savings time to a brief spike in car accidents.  The time change was started about a 100 years ago to save energy but modern research has found little or no cost savings. Federal law  allows states to remain on standard time year-round but only Hawaii and most of Arizona have chosen to.   Having the country switch to switch to year-round daylight saving time,  would require congressional approval. Let's protect our circadian rhythms and encourage our legislators  to pass a bill stopping this switching back and forth.