"No dig" gardening is a system of layering organic materials to create nutrient-rich soil ready for planting. A "no dig" garden area should be prepared several weeks before you are ready to sow seeds ...
Find out the ideal depth to loosen soil in new planting beds, depending on what you're growing.
I can't promise you won't break a sweat, especially in hot, humid climates, but "no dig" gardening is much easier than dragging out the shovel to turn the soil and get your garden ready for planting.