Afternoon naps may feel relaxing, but a new study reveals they could raise the risk of early death. Experts say frequent or irregular napping might signal deeper health problems.

As a heat wave hits multiple U.S. states, some areas are have been placed under extreme heat watches and warnings.

Heat index values and the associated risk of heat-related impacts will be highest on Monday and Tuesday, with air temperatures forecast to hit 99 both days and heat index as high as 109.