Takes a Beating...
The heart is the first major organ to develop in a human body. And it is usually the last major organ to stop working.
A mechanism of remarkable reliability and endurance, the heart beats approximately 3 billions times in a lifetime. The amount of blood that passes through an average adult heart in a week could fill a backyard swimming pool.
SOURCE: Washington Post review of Heart: A History by Sandeep Jauhar (11/11/18)
...So Keep it Ticking
Americans seeking to stay healthy can get their exercise in small increments of just a few minutes at a time, according to new guidelines issued this month by the government.
For adults to stay healthy, the new guidelines call for 150 to 300 minutes of moderate-intensity exercise or 75 to 150 minutes of vigorous-intensity physical activity each week, along with at least two days a week of muscle-strengthening exercises.
The guidelines cited walking briskly at 2.5 to 4 miles per hour, playing volleyball or raking leaves as moderate-intensity activity. Vigorous-intensity exercise includes jogging or running, carrying heavy groceries or taking a strenuous fitness class.
SOURCE: Lenny Berstein, Washington Post (11/13/18)