Usually this sort of statement is used as an excuse for doing something stupid or wrong. But we, as humans are incredible beings. The way we move, live, and think; it's beyond what any other species could ever imagine (and most of them can't even do that).
Don't forget that we are built up of an amazing collection of things, bones, muscles, nerves, along with thousands of other tiny and large ties that make us who we are. We take it all for granted every day in our warm houses, our cars, computers, microwaves, fancy clothes and comfortable shoes. Those are all gifts that our minds were able to create for ourselves to protect the body. But remember, our body was created to protect itself. Use it.
Run, jump, climb, crawl, lift, throw, push, pull, wrestle, do it all.
Don't let that thing go to waist.
Never Stop, GET FIT.