I'm sure if I was a good writer, with notes and references and fancy stuff like that, I'm sure I'd write something profound about that Newton's Law, you know, the one that goes on about an object in motion stays in motion. Lot's of habit-writer-folk like that one.
But I'm not.
It is true though, to a point, that if you can just start your training, or any habit you want to get into...then it's much easier to do a little more.
It's also true, that you'll face a lot less internal resistance if you ask yourself to do a tiny habit -- like one Skater Squat, or one Chin-Up -- than if you insist on a massive workout.
That's why I like what I call the Minimum-Plus approach: you place absolute life or death importance on doing the minimum -- The one measly Skater Squat or Chin Up -- you make sure you get that done no matter what, but, if you feel like it, you're allowed to do more. Much more. If you feel like it. Which, surprisingly often, you will.
Any time you're adding a new habit, unless you've the track record to prove you can handle big changes, I strongly suggest the Minimum-Plus approach.