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Dominant animals show their status with expansive postures, and humans are no exception. Although effects on other outcome variables described as promising by Cuddy, Schultz & Fosse (2018) might be reproducible, the total available evidence in favor of an effect on hormones is thus currently very weak. This decline may either simply reflect the diurnal pattern of these hormones (Faiman & Winter, 1971; Delfs et al., 1994; Brambilla et al., 2009; Liening et al., 2010), and/or a reduction in arousal from the start to the end of the experiment as far as cortisol is concerned. This procedure revealed a decline from the first to the last time point for all three hormones. Testosterone and progesterone responses to arousal of power and affiliation motives have been observed in a similar time window (Schultheiss, Wirth & Stanton, 2004; Seidel et al., 2013). The second post-posture sample reflected the effect of adopting the same posture three times, at approximately 36, 24 and 10 min before sample collection.
Your body language can send powerful signals to your brain, influencing hormone release and emotional responses. Chronic stress due to poor posture can lead to long-term hormonal imbalances, affecting your mood, sleep patterns, and immune function. Your hormones, confidence, and sex life will thank you. Open, upright postures signal dominance and readiness, which tell the endocrine system to release testosterone. Over time, this weakens the core, tightens the hips, and collapses the chest — leading to a hormonal state of stress and passivity. Poor posture, on the other hand, sends your body into stress mode. We found no main effect of pose type on testosterone, cortisol, risk or feelings of power.
Altogether, it appears that additional empirical evidence is necessary to reach final conclusions about whether expansive and constrictive postures induce changes in testosterone or cortisol levels at different time points than assessed previously or when adopted for longer durations. Neither testosterone and cortisol levels linked to dominance behaviors, nor progesterone levels related to affiliative tendencies, responded differently to adopting expansive as opposed to constrictive postures. Despite this growing body of evidence that does not support posture effects on hormone levels, the question remains as to whether repeatedly holding postures over time and/or assessing hormonal responses at different time points would yield different outcomes. From cortisol levels to testosterone production, your posture can have a profound effect on various hormones that influence your mood, stress levels, and even your confidence. In doing so, it assessed whether larger doses of posture or collection of saliva samples at longer time intervals than previous studies would produce similar effects on testosterone and cortisol as the study by Carney, Cuddy & Yap (2010) in contrast to previous non-replications. The current study assessed whether repeatedly adopting expansive and constrictive postures known as power postures induces endocrine responses that resemble the hormonal correlates of dominance and affiliative behavior.
Great posture is a sign of health, and can affect quality of life and our life span. Poor posture can affect a variety of systems in the body. Increased cortisol will lead to weight gain, hormonal imbalance, fatigue, poor sleep, impaired healing, and a wide variety of other symptoms. From a social standpoint, we know that how we present ourselves effects how others perceive us, but it can also effect how we see ourselves. Being mindful of your body language can help you better manage your hormonal balance and emotional well-being. By maintaining proper spinal alignment through regular exercise, ergonomic adjustments, and chiropractic care, you can support optimal hormone function and improve your overall health. Poor posture can compress the spine, leading to decreased circulation and nerve function, which can impact hormone production and balance.
Therefore, our sample size is too small to draw any conclusions regarding potentially existing effects below this threshold. If anything, this reduced variation of our dependent variables and should hence have facilitated the detection of posture effects. Akin to four previous studies using a single posture manipulation (Ranehill et al., 2015; Ronay et al., 2017; Smith & Apicella, 2017; Davis et al., 2017), we did not replicate the effects reported by Carney, Cuddy & Yap (2010). The first post-posture sample captured the potential incremental effect of adopting a posture twice, at approximately 23 and 11 min before sample collection.
Good posture allows your diaphragm to expand fully, promoting optimal oxygen intake. As a therapist and posture specialist, I understand the appeal of adding a cushion to your office or gaming chair.

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