Good and Bad, the Little Things Add Up in Fitness
By Gretchen Reynolds
The past year in fitness has been alternately inspiring, vexing and diverting, as my revisiting of all of the Phys Ed columns published in 2012 makes clear. Taken as a whole, the latest exercise-related science tells us that the right types and amounts of exercise will almost certainly lengthen your life, strengthen your brain, affect your waistline and even clear debris from inside your body’s cells. But too much exercise, other 2012 science intimates, might have undesirable effects on your heart, while popping painkillers, donning stilettos and sitting and reading this column likewise have their costs.
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