There's much wisdom there.
A New Year means Resolutions for many. If your resolution involves exercise, here's my unsolicited advice:
Change what you do, and how you do it, before trying to cram more stuff (exercise) into your life.
Everyone walks. Walk more, take the stairs, and maybe walk briskly when you don't have to. Plan activities where you are forced to bend, lift, and stretch. Incorporate more activity into your work, if possible (I love the Japanese "calisthenics before work" concept). A ten minute car trip will take you 20 by bike, bring saddle bags and a backpack. The additional weight on the way home is a good thing.
This guy at my work is a lazy SOB. He sits on his butt and web-surfs whenever he gets the chance. Yet, he brings in weights to "work out". I've seen an "ab wheel" under his desk. Still, he uses a forklift move a 35lb box. The only time I've seen him move fast is at the end of his shift.
Don't be That Guy.