Does cooperation make sense when using doping or stimulants?

The training sessions are intended for people who do not use doping or stimulants.
No one can predict how the body will behave after some time from using doping or stimulants (both the physical and mental state of the body).
What’s more, even a stimulant in the form of alcohol makes it impossible to objectively assess the situation in the long run (including, of course, progress and benefits resulting from cooperation) due to mood swings.
Seemingly unimportant, but crucial when cooperating with JacaCoachTEAM.