Nothing made up about load monitoring. There's a really good method for that: morning resting and standing heart rates and the difference between them. Resting and orthostatic HRs, they're called. Resting goes up 6-8 beats. or the difference between resting and orthostatic goes up more than 10 beats, take a day or days off until it or they drop below that threshold. This is a very simple and reliable test. Nothing else works as well, not even Training Stress Balance.