The things such as physique and bloodlines are things inherent to a person since his/her birth, and the effects they provide to the person, such as fast cultivation speed, are present from the start.
The physique and bloodline are usually dormant and need to be unlocked, further amplifying the benefits they bring. One could even unlock the shackles on them early on during the cultivation journey, as the earlier the benefits, the faster their cultivation could progress during the early stages.
There won't be any difference to the ones unlocking the two at an early stage, other than that after being influenced by the stars that cultivator linked themselves, resulting in a chance for the bloodline and physique to mutate to a unique variant.
Still, with the factor of cultivation speed with each unlocking, an optimal time for a person to activate these two important intrinsic properties has been researched.
