From: To: Subject: Re: Run to stay young from New york times last week Date: Mon, 08 Dec 2014 16:06:49 +0000 do you think bike riding is good too? On Dec 8, 2014, at 10:40 AM, MEM< > wrote: Run to Stay Young By GRETCHEN REYNOLDS DECEMBER 3, 201412:01 AMDecember 3, 201412:01 am 416 Comments Photo <imageootjpg> CreditGetty Images <imageoo2.png> PLAYS ED Gretchen Reynolds on the science of fitness. Running may reverse aging in certain ways while walking does not, a noteworthy new study of active older people finds. The findings raise interesting questions about whether most of us need to pick up the pace of our workouts in order to gain the greatest benefit. Walking is excellent exercise. No one disputes that idea. Older people who walk typically have a lower incidence of obesity, arthritis, heart disease and diabetes, and longer lifespans than people who are sedentary. For many years, in fact, physicians and scientists have used how far and fast someone can walk as a marker of health as people age. But researchers and older people themselves also have noted that walking ability tends to decline with age. Older people whose primary exercise is walking often start walking more slowly and with greater difficulty as the years pass, fatiguing more easily. Many of us probably would assume that this physical slowing is inevitable. And in past studies of aging walkers, physiologists have found that, almost invariably, their walking economy declines over time. That is, they begin using more energy with each step, which makes moving harder and more tiring. EFTA00357096