Researchers have theorized that having DST all year round (never changing the time during the year) could decrease deaths from traffic accidents — saving up to 366 lives, according to a 2004 study in the journal Accident Analysis & Prevention.
In another study of Americans between 18 and 64 in Arizona , as well as Colorado, New Mexico, and Utah, researchers found no increase in physical activity after daylight-saving time ended in the fall.
All in all, there's a fair case that daylight-saving time is bad for us puny humans, even if it might save a little energy or stimulate the economy slightly. That's why some people are campaigning to get rid of it
Source:
http://www.businessinsider.com/daylight-savings-time-bad-health-effects-...
-Sleepless in Seattle