Holding the full gallon jug,?

Holding the full gallon jug, step up and down off of the bottom step on a stairway. Do this by putting one foot up, then the other, then bringing one foot back down, followed by the other. (This way you will be lifting your whole weight, plus the gallon jug completely up onto the step.) Now step up and down slowly ten times, and write down how long this took you in seconds