I've got a 5 mile hiking trail loop near my shack. I've got both a 20lb and a 30lb slabs of iron that I mix and match into my backpack and my 10lb Garand sans sling.
With said gear I hike the trail 6 days a week ( 1 day off for good behavior). Back at the trail head if the ground is dry or frozen I then drop for pushups, then shed the backpack for crunches.
If the ground is sloppy I head back to the shack for PT with then a final round of chin-ups.
Come October and those 1000 ft. elevation climbs I'm glad for the grunts and groans I've banked during the year...