Why is testosterone known as the male hormone and cortisol known as the stress hormone? How do these hormones influence decisions?

Testosterone is produced in the testes by interstitial cells (also known as Leydig cells) in males starting at puberty and continuing for the rest of their lives. Testosterone production tends to slowly decrease in men after about 30 years. In both men and women, the adrenal cortex also produces small amounts of testosterone continuously from birth to death. Thus, both men and women have testosterone, though the level is much higher in men. Cortisol is known as the stress hormone because it assists the body in responding to stress by helping to maintain normal glucose levels. When a person is stressed, the amount of cortisol increases, which leads to an increase in the glucose in the blood.
After secretion, steroid hormones such as testosterone and cortisol enter the bloodstream and cross the blood-brain barrier. These hormones alter the production and function of synapses in neurons and the structure of brain cells. This implies that hormones can either stimulate or inhibit neural activity. Cortisol and testosterone receptors are located throughout the brain, including the frontal cortex, amygdala, hippocampus, and nucleus accumbens.