1 rep, 3 rep, 5 rep maxes! How do they all relate!? We’d love to say they’re all part of a perfect linear relationship, but sadly, that’s not the case. There are however some great tools out there to predict your hypothetical 1 rep max based on past performances.
Check out the following:
1. The back of your log book! There’s a great lifting percentage chart there.
2. One rep max calculator. There are MANY online. Here’s one to start with.