Very true, but being offseason may elicit different levels of drug use. It looks like Kai stays on heavy use throughout the whole year. Do they all do?
Some say the take time of .Some just cruise on low dosage.
I know a pretty well known Bb who took 300mg Anadrol (a day)

and mega doses of Tren and Test for 4 years straight. No break. Sometimes even more.
That's 15 years ago and he is fine no problems. He stopped about 10 years ago
Other don't do so well and just die all of a sudden
Kai might be on full throttle all year long. But thats my guess