Honestly something is going on since 2020, but my take is they are taking doping.....but legal doping, something who is not banned. Something ethically wrong, but legal.
Just my take. I don’t believe they are risking with something illegal at least yet, but i can be wrong....
Are you talking about a dietary supplement(s), or an actual pharmaceutical(s) that's
not on the banned list? (whatever that may be).
What about
EPO microdosing & plain old blood transfusions? I do a lot of research on doping on the athletics side of things. If look at professional distance running the substances where the vast majority of the bans are coming from are: 1) rEPO, 2) Blood transfusions (ABP hematological anomalies cases) & 3)Testosterone/Nandrolonoe. And it's really been this way for years now with dopers trying to figure how to maximize their doping program while flying under the radar of the ABP.
If it's something legal & not banned with the cyclists, what on Earth could that be? What is the "big secret" with a legal substance(s)? I don't see how a legal substance(s) could be kept so clandestine. Athletes, coaches, trainers, etc, love to gossip & with social media these days, they have a platform to do all that talking on. Lol
EPO & testosterone have been one of the popular stacks with endurance athletes for decades. Matt Mosman, MS, of EndurElite explains why this cocktail is so popular with athletes:
View: https://youtu.be/o5uNN8fwCQE?si=G8ZUO3MgS_piZBUG