You should have the equipment too. Begin by standing on a comfortable surface, where you have plenty of room at each side. With a 2kg potato bag 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, and 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 5kg potato bags. Then try 10kg potato bags and then eventually try to get to where you can lift a 20kg potato bag in each hand and hold your arms straight for more than a full minute. (I'm at this level.) After you feel confident at that level, put a potato in each bag.
I can lift up to a 100kg bag in each hand now. Maybe some day I'll try putting a potato in each as you suggest but I think it would prove too much for me.
Haha, too funny!!! That actually wouldn't be a bad idea for someone who wants/likes to work out, but I'm not that someone.
