Tomorrow’s workout: 6 miles (or 45 minutes) easy
Supplemental: Hand-stand pushups (as many as possible; see image below), 30 regular push-ups, 50 crunches; move from one to the other and repeat 3x with no rest. For the final set of crunches I usually lie in the crunch position, then raise my back just high enough to engage the abs, then, with arms extended down my sides, alternate reaching to one side and the other. Sometimes I substitute planks for crunches, in which case the last set is usually side planks.