Training Max (TM)
Your Training Max is a deliberately conservative "working max" used to generate every percentage in the program.
By default it's 90% of your 1RM (some templates use 85%).
Why lower? Because 5/3/1 is about long-term progress, not one-rep heroics.
If your main sets feel too easy the first couple of weeks, that's the point — you'll be crushing AMRAPs by week 3, and your TM will climb cycle over cycle.