Up and down. Repeat.
Yesterday: no run in the morning = grumpy day.
Today: run up and down the same hill 4 times, plus a longer climb for good measure = chipper day
Lesson learned: skipping the scamper may result in the day going downhill (not in the good way). Life’s ups and downs can be best faced with more practice ups and downs.
(And I thought I hated hill training.)