Regular exercise, a balanced diet, adequate sleep, and effective stress management are all crucial for maintaining healthy testosterone levels. Given the impact of chronic stress and SNS activation on testosterone levels, natural testosterone boosters can play a role in supporting hormonal balance. The impact of chronic stress and the subsequent activation of the SNS on testosterone levels is well-documented. The sympathetic nervous system and testosterone are two critical components of the body’s response to stress and danger. It is crucial to manage stress effectively to maintain optimal testosterone levels and overall well-being. Moreover, there is evidence that testosterone level can change dramatically in an acute context (testosterone reactivity), which helps the individual to better adapt to an environmental context (Archer, 2006). Surprisingly, testosterone response to skydiving has been neglected in the literature. On both testing days, the men first received a drug that suppressed their testosterone. Researchers, led by Dr. Justin Carré, sought to rectify this gap by conducting a study of the effects of testosterone on the brain's response to threat cues in healthy men. In some previous work, men, but not women, showed testosterone reactivity. Second, equivalent testosterone reactivity was seen in both men and women. Given the relationship between testosterone and the SNS, it is plausible that testosterone boosters could influence the functioning of the SNS. It prepares the body to respond effectively to potentially threatening situations by increasing heart rate, constricting blood vessels, and dilating the pupils, among other physiological responses. A holistic approach to health, including stress management, regular exercise, and a balanced diet, is essential for overall well-being. It enhances alertness, physical performance, aggression, and decision-making, all of which are crucial in high-stress situations. Testosterone plays a vital role in the body’s fight-or-flight response. Participants also wore a cardiac monitor strapped to their chest during the jump to measure autonomous nervous system activity, including heart rate and a measure of heart rate variability called RMSSD. Testosterone levels in men have been linked to risks for cardiovascular disease, Parkinson’s and even rheumatoid arthritis. Stress hormones trigger cravings in an attempt to keep us safe from danger It becomes a generalized fear response to a situation that isn’t particularly dangerous anymore. This is a clear sign that we need to carve out more time for self-care and cultivate healthier coping strategies that will help us in the long term." The Level 1 predictors capture the within-individual time-varying predictors of testosterone levels which then become slopes-as-outcomes in the Level 2 equation. The HLM modeled testosterone changes in response to skydiving at Level 1 in order to model time-varying predictors of each sample of testosterone. Despite testosterone’s relationship to SS (Campbell et al., 2010) and ANS functioning (e.g., Porges et al., 2015), it is not clear whether ANS functioning has a role in modulating testosterone response to skydiving, nor whether the relationship between testosterone and ANS functioning is independent of SS. Ours’ (Meyer et al., 2015) and others’ (Chatterton et al., 1997; Hare et al., 2013; Meyer et al., 2015; Richter et al., 1996) findings for cortisol reactivity in response to skydiving challenges this dual-axis view. Thus, testosterone has still not been adequately examined in a genuinely thrilling (as opposed to stressful) context, like recreational skydiving. Testosterone re- sponsivity to skydiving was predicted by increased cortisol, increased sympathetic activity (heart rate) and reduced parasympathetic activity (RMSSD). Independent of physiological effects, increased SS predicted testosterone responsivity to skydiving. Natural testosterone boosters, like Prime Male, can support healthy testosterone levels, but should be used as part of a comprehensive health strategy. This could indirectly influence testosterone levels, as poor sleep has been linked to lower testosterone levels. Research has shown a correlation between low Vitamin D levels and low testosterone levels. Some studies suggest that fenugreek may help to increase testosterone levels by reducing the enzymes that convert testosterone into estrogen. Research suggests that D-Aspartic Acid may increase testosterone levels in some people.