There are many strength training programs that involve calculating your 1 rm or 1 repetition maximum. Some programs want you to use a % of your 1 rm, which is sometimes even harder to calculate.
Most of us do not how how to figure out this number without performing the actual rep itself. Use this easy calculator to get a basic idea of how much weight you can lift once. read on
Posted by fitnesshut 
Posted by fitnesshut 