课文：

Left foot, right foot, left, foot, right foot ... you can travel fast or slow. The movement of your feet gets you where you need to go. But it also gets you so much more! Walking is a basic, simple exercise that’s suitable for almost everyone. Best of all, it’s free!

suitable：合适的、恰当的
suit：适合

Walking helps you in many ways. First it makes your heart stronger. Studies show regular walking reduces your chance of heart disease. Walking quickly for 30 minutes a day also helps control high blood pressure. It can reduce your chance of having a stroke or developing some cancers, too.

reduce：减少、降低
re-：往下
high blood pressure：高血压
stroke：中风、一挥、一击

Want to lose weight? You need to burn 600 more calories each day than you eat. Walking is the easiest way to do that.

As people age, their brains don’t work as well. One in 14 people over 65 suffers from memory loss. Older people who walk six miles or more per week keep their brains in better shape.

burn：消耗、燃烧
in shape：处于良好状态

文法：
suffer from（备受…所苦、深受…所折磨）

特别补充：
on foot：走路
proverbs：格言、谚语
platitude：陈腔滥调