An object in motion stays in motion and an object at rest stays at rest. Well, the same is true of our bodies; it’s hard to break our old, sedentary habits and replace them with new, healthier ones.
So try this.
They say it takes 21 days to develop a new habit. Clearly, this number is going to vary from person to person depending on a very wide range of factors. But let’s roll with it.
Take 21 post-it notes, use a pen to number them from 1 - 21 and then place them on your wall. Go ahead and do it right now.
For the next 21 days, you’re going to do some sort of physical activity. Some days, you might go to the gym. Other days, you might just take a walk. Or do some jumping jacks or squats in your living room. Or even dance around the room to your favorite songs.
Regardless of the activity, you’ll do something that gets your body moving and your heart pumping. And once you complete the physical activity, take down the post-it note for that day. It’s like a countdown.
After 21 days of physical activity, you’ll have taken a big step in a healthier direction - and you may even have a new habit. After all, a body in motion stays in motion. So let’s get moving!
Researchers from Oregon State University studied 6,000 American adults and found that a generally active lifestyle (rather than structured exercise at the gym) 
