The low to moderate (40–300mg) amount of caffeine typically contained in a cup of coffee has been found to improve alertness, attention and reaction time, but has less consistent effects on ...

The latest news and headlines from Yahoo News. Get breaking news stories and in-depth coverage with videos and photos.

Sports News, Scores, Fantasy Games ...

transcript. Will the U.S. Join Israel’s War With Iran? Understanding President Trump’s shifting position on an intensifying conflict. 2025-06-18T06:00:12-04:00 ...