Walk down to the watermelon patch – one quarter mile. Done at a brisk pace, this counts as aerobic exercise.
Select two watermelons, approximately twenty pounds each. Picking them up counts as weight-lifting.
Tuck one watermelon under each arm and carry them back up the hill toward the house. Occasional rests may be necessary. This counts as squats: bending knees and slowly lowering self and watermelons to the ground, then reversing the process to resume the trek homeward.