The findings contribute to our understanding of testosterone's causal role in status-seeking motivation in competition behavior, and indicate that testosterone adaptively increases our drive for high status in a context-dependent manner. Sapolsky’s research also suggests that the documented increases in cortisol as a function of losing a dominance contest can lead to decreases in testosterone in power-motivated individuals (see Figure 1). In animals and humans, testosterone levels change as a function of dominance contests and experiences, and these changes in testosterone feed forward to drive changes in behavior (e.g. willingness to compete in another contest) (Mazur, 1985; Mehta & Josephs, 2006; Sapolsky, 1987). Does TRT guarantee increased motivation? Here’s how TRT impacts motivation Testosterone plays a key role in mental and physical energy. However, individual responses vary based on health, dosage, and lifestyle. Androgens may modulate the physiology of vaginal tissue and contribute to female genital sexual arousal. Men who watch sexually explicit films also report increased motivation and competitiveness, and decreased exhaustion. Men who watch a sexually explicit movie have an average increase of 35% in testosterone, peaking at 60–90 minutes after the end of the film, but no increase is seen in men who watch sexually neutral films. This reaction engages penile reflexes (such as erection and ejaculation) that aid in sperm competition when more than one male is present in mating encounters, allowing for more production of successful sperm and a higher chance of reproduction. Studies conducted in rats have indicated that their degree of sexual arousal is sensitive to reductions in testosterone. Testosterone levels follow a circadian rhythm that peaks early each day, regardless of sexual activity. have been undertaken on the relationship between more general aggressive behavior, and feelings, and testosterone.} Testosterone and the brain. Men undergoing TRT often report increased energy, greater motivation, and enhanced mood, allowing them to perform better in both their personal and professional lives. Testosterone also plays a crucial role in emotional resilience and mental toughness. Consult a medical provider to see if TRT is right for you, and combine it with healthy habits for best outcomes. Results vary, and lifestyle factors play a big role. In a study reporting on men’s choices to compete again after a contest, Mehta and Josephs (2006) showed that contest-induced testosterone increases predicted men’s inclination to engage in another contest, whereas testosterone decreases predicted men’s behavioral withdrawal from dominance situations. These studies suggest that testosterone change is involved in learning the behaviors that lead to winning dominance contests. In rats, testosterone increases have also been linked to reward and reinforcement (Alexander et al., 1994), and in mice testosterone surges after winning contests can act as reinforcers for effective dominance behavior (Oyegbile & Marler, 2005). Like most hormones, testosterone is supplied to target tissues in the blood where much of it is transported bound to a specific plasma protein, sex hormone-binding globulin (SHBG). The male generative glands also contain Sertoli cells, which require testosterone for spermatogenesis. Like other steroid hormones, testosterone is derived from cholesterol (Figure 1). However, the concentrations of testosterone required for binding the receptor are far above even total circulating concentrations of testosterone in adult males (which range between 10 and 35 nM). Greatly differing amounts of testosterone prenatally, at puberty, and throughout life account for a share of biological differences between males and females. Androgen receptors occur in many different vertebrate body system tissues, and both males and females respond similarly to similar levels. If you or someone you love is feeling stuck, sluggish, or unmotivated, it might not be a lack of willpower—it could be hormones. This is why hormone balance is crucial, not just for physical health but for mental well-being. Testosterone helps activate the brain regions responsible for motivation, making it easier to push through obstacles. Testosterone plays a direct role in reward processing in the brain. We often think about testosterone in the context of muscle mass, energy levels, or libido.
