JACC (Journal of the American College of Cardiology) has a number of interesting fitness articles in the August 5, 2014 issue. Those articles are titled:
Life-Threatening Events During Endurance Sports: Is Heat Stroke More Prevalent Than Arrhythmic Death?
Lior Yankelson, MD, PhD, Ben Sadeh, MD, Liron Gershovitz, MD, Julieta Werthein, MD, Karin Heller, MD, Pinchas Halpern, MD, Amir Halkin, MD, Arnon Adler, MD, Arie Steinvil, MD and Sami Viskin, MD
J Am Coll Cardiol. 2014;64(5):463-469. doi:10.1016/j.jacc.2014.05.025.
Neither Too Fast Nor Too Hot: Keeping Marathoners’ Hearts Alive During the Race
Brian Olshansky, MD and David S. Cannom, MD
J Am Coll Cardiol. 2014;64(5):470-471. doi:10.1016/j.jacc.2014.04.059.
Leisure-Time Running Reduces All-Cause and Cardiovascular Mortality Risk
Duck-chul Lee, PhD, Russell R. Pate, PhD, Carl J. Lavie, MD, Xuemei Sui, MD, PhD, Timothy S. Church, MD, PhD and Steven N. Blair, PED
J Am Coll Cardiol. 2014;64(5):472-481. doi:10.1016/j.jacc.2014.04.058.
Minimal Amount of Exercise to Prolong Life: To Walk, to Run, or Just Mix It Up?
Chi Pang Wen, MD, DrPH, Jackson Pui Man Wai, PhD, Min Kuang Tsai, MS and Chien Hua Chen, MD, MPH
J Am Coll Cardiol. 2014;64(5):482-484. doi:10.1016/j.jacc.2014.05.026.
So, as you exercise and run this sunmmer, make sure to stay hydrated so that you avoid heat stroke, do some running, even if it's only 5 or 10 min/day, and you can keep your pace slow (<6 miles/hr). You don't have to run 20 miles/week to reap the health benefits that researchers recently discovered about leisure runners.