Andrew Huberman· PhD
A hierarchy starts with behaviors and nutrition. Behaviors, of course, includes training, and limiting stress, and all the things we talked about before-- sunshine et cetera-- and optimize nutrition. Then, we talked about supplements-- all the things we just listed off to optimize testosterone. And we can get into this, but estrogen as well, which is important for libido, and brain function, and tissue function, and joints feeling good, et cetera. But then we get into the realm where one might, or could consider, exogenous hormones.