Medium 3.6 - 6.3 House work (mopping, scrubbing), health club exercising, treadmill work, stretching, yoga, walk/run-play with children, aerobic class, dancing, carrying bucket/wood, auto body repair, shoveling snow, golf (carrying clubs). Heavy to Very Heavy > 6.4 Calisthenics (push up, pull up, sit up, vigorous effort), carrying groceries upstairs, shoveling coal, bailing hay, fire fighting, sawing by hand, splitting wood.