Showing up after a bad day is harder than showing up after a good one. It also counts more.

Momentum does most of the work when things are going well, so turning up then costs you almost nothing. After a bad day you have to go without the encouragement, which is harder and also where the habit gets built, because you are proving it does not depend on results. Those days tell you whether something is a mood or a commitment. They count for more precisely because they cost more.

Decide now what your reduced version looks like on bad days. Twenty minutes, half the reps, the easy piece. Use it next time you want to skip, so the streak survives on a lower setting rather than breaking.