In general, the exercise guidelines set out by the American College of Sports Medicine give you a place to start when figuring out how often to workout. 1  For cardio: Depending on your goal, guidelines recommend moderate exercise five or more days a week or intense cardio three days a week to improve your health.
This Day In History: 04/04/1968 - Dr. King is Assassinated. Many historical events occurred on April 4th, and Russ Mitchell recaps them in this video clip from This Day In History. President William Henry Harrison became the first US President to die while in office when his cold turned into pneumonia.
How the Government Killed Martin Luther King, Jr. efore scoffing at this headline, you should know that in 1999, in Memphis, Tennessee, more than three decades after MLK's death, a jury found local, state, and federal government agencies guilty of conspiring to assassinate the Nobel Peace Prize winner and civil rights leader.