Even if you don’t feel like doing it, just try this.
I start out with 5 minutes.
You figure if you do 5, then you can do 7, which turns to 8. Then minute 9 comes along, and you’re like, “why not shoot for 10.” So you do 10 minutes and you’re thinking, “well, I might be able to do two more minutes, just because when I was 12 I had a crush on Corey Hart because he wore his sunglasses at night.” So you get to 12, and you think, “I might as well shoot for 15.”
So, before you know it, you’ve laced up your Keds and you’ve made it a full 15 minutes on the treadmill or bike, or walking outside, and all because you started with 5 minutes.
You can do it!