In Part 1 (Problem) of The science of exercising aging muscles, I described the cellular impact exercise has on aging, as reported by Gretchen Reynolds in The New York Times (The best exercise for aging muscles1, March 23, 2017).
I mentioned the Mayo Clinic research confirming that, particularly among adults 60+, high-intensity interval training delivers the best results.
Dr. Joseph Mercola, Peak Fitness
Familiar with the Mayo Clinic findings, and broadly supportive of their conclusions, Dr. Mercola2 (Peak Fitness) agrees that high-intensity interval training (HIIT) and high-intensity circuit training (HICT) ‘can yield greater fitness benefits in less time compared to longer, low- or moderate-intensity workouts.’
Recent weeks have featured elevated market volatility across equities, fixed income, commodities and currencies. This phenomenon erupted abruptly in very late-January following an extended period over late- 2017/early-2018 of accelerated gains devoid of any material pullbacks, which left market positioning unbalanced. Having entered into the late stages of the business cycle (the length of the U.S. recovery, assuming it continues, will reach the ten year mark in July 2019, tied for the longest on record in the post-WWII period), it is quite normal that the maturation of the market cycle should be characterized by an elevated range of volatility amid rising interest rates and a flattening yield curve. Markets will also have to continue to contend with increased global trade anxiety as the prospect of new U.S. tariffs on steel and aluminum imports of 25% and 10%, respectively, has strained ongoing NAFTA renegotiation talks and presents a new source of market risk.