"Typically, by 40, you are gaining about five pounds of fat and losing five pounds of muscle every decade," she explains.

10 Healthy Ways to Lose Five Pounds Determine Your BMR and Estimated Energy Needs. Basal Metabolic Rate (BMR) is a measure of your metabolism or how many calories your body burns naturally with no ...

Sure, it's fully above-board to order add-on weights in five-pound increments (which, side-note, I love so much more than a 10-pound jump). However, going beyond 60 pounds isn't sanctioned by REP.