Trenbolone greatly increases the level of the extremely anabolic hormone IGF-1 within muscle tissue.

Trenbolone also has a very strong binding affinity to the androgen receptor (A.R), binding much more strongly than testosterone.

This is important, because the stronger a steroid binds to the androgen receptor the better that steroid works at activating A.R dependent mechanisms of muscle growth.

There is also strong supporting evidence that compounds which bind very tightly to the androgen receptor also aid in fat loss. Pharmacom 3-Tren 200 has a release time of between 1-10 days.