Dose-dependent crashing?

People have crashed from every possible treatment on here. How many of those people started taking a standard dose consecutively until crashing, and how many people started off in low doses, and incrementally increased them until our bodies were able to adapt? This goes for Tribulus, Tongkat, T injections, Creatine, HCG, all of the possible treatments. It seems that incremental dosing should be used with any substance, as it may significantly decrease the risk of crashing.