heres an strength training exercise you can try at home...baby steps...

Begin by standing on a comfortable surface, where you have plenty of room at each side.

With a 5-lb 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, 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 10-lb potato sacks. Repeat the previous weeks efforts.

Then try 50-lb potato sacks, and then eventually try to get to where you can lift a 100-lb potato sack 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, start putting potatoes in each sack…