Twenty minutes of strength training before your bouldering session, or a quick kettlebell workout on your non-climbing days.
A handful of hangs on the fingerboard after a day at the crag, or while you’re cooking dinner.
A little of the stuff that feels like work, frequently, with your full attention, over the long haul.
There is no prize for doing the hardest workout you possibly can. And no reset button if you get injured while training.
Just filling the bucket, drip by drip.
No single drop raises the water level a perceptible amount. But a few years worth of drops, and you’ll be busy looking for a larger bucket.