This is a suggested exercise for "seniors" to help build strength and stamina.
Begin by standing on a comfortable surface where you have plenty of room at each side. With a 5lb potato sack in each hand, extend your arms straight out from your sides and hold them there as long as you can. Try to reach a full minute, then relax.
Each day, you'll find that you can hold this position for just a bit longer. After a couple of weeks, move up to 10lb potato sacks. Then 50lb potato sacks and then eventually try to get to where you can lift a 100lb potato sack in each hand and hold your arms straight for more than a full minute.
After you feel confident at that level, put a potato in each of the sacks.
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