If you want to make working out a habit, have minimum days.
If you’re like me, you go through phases where you want to get back into shape and try really hard at it, only to lose motivation after a few weeks or months. The only time it stuck was when I planned out what would be my “minimum day”. A minimum day is just the bare minimum of what you have to do to stay on track, but is much faster and isn’t too daunting.