More Muscular Men Can Get Harder, New Study Finds

A recent study published in Essence of Being a Man suggests that men with greater muscle mass and strength may also enjoy better erectile function. The research provides insight into how overall physical condition impacts intimacy health — and it’s not just about looking good shirtless.

The paper titled ‘Exploring the link between muscle quality and erectile dysfunction: assessing the impact of mass and strength’, examined data from a diverse sample of adult men to assess how skeletal muscle composition influences erectile performance.

Lead author Dr. Michelle Duan and her colleagues from Baylor College of Medicine collaborated with muscle-health expert Dr. Gabrielle Lyon to bridge the gap between urology and strength physiology.

Researchers measured participants’ muscle mass and strength using established clinical methods, including DXA scans and dynamometer tests. Erectile function was assessed using the International Index of Erectile Function (IIEF). It is a validated self-report questionnaire widely used in intimacy health research.

The results showed a clear trend: men with higher lean muscle mass and better strength scores were less likely to experience erectile dysfunction (ED). This association held even after adjusting for factors such as age, cardiovascular health and testosterone levels.

The findings support the idea that muscle health is not just cosmetic — it plays a significant role in vascular and metabolic function, both of which are essential for maintaining strong erections.

Erections depend heavily on blood flow, nerve signaling and hormonal balance. Muscle tissue is metabolically active, improving insulin sensitivity, reducing systemic inflammation and supporting cardiovascular efficiency — all of which contribute to optimal erectile function.

Low muscle quality is often linked to poor circulation, reduced testosterone and increased oxidative stress — factors that can speed up the onset of ED. The study also found that grip strength, a proxy for overall muscular strength, was independently associated with erectile quality. This reinforces the idea that strength training might be an overlooked intimacy health booster.

While the study was observational and cannot prove causation, the authors suggest that improving muscle mass and strength could be a viable preventive measure against erectile dysfunction. Strength training, resistance exercises and proper nutrition to support lean mass could therefore benefit both physical performance in the gym and in the bedroom.

Dr. Duan’s team concluded that muscle health should be a more prominent focus in ED prevention strategies, especially for men at midlife or with cardiovascular risk factors.

Scientific References:

Duan M, Hernandez B, Kronstedt S, Donato J, Saffati G, Parikh N, Khera M, Lyon G. Exploring the link between muscle quality and erectile dysfunction: assessing the impact of mass and strength. Sex Med Rev. 2025 Jul 20; qeaf033. doi:10.1093/sxmrev/qeaf033. Online ahead of print.

Yafi FA, Jenkins L, Albersen M, et al. Erectile dysfunction. Nat Rev Dis Primers. 2016;2:16003. doi:10.1038/nrdp.2016.3.

Khera M. Erectile dysfunction: evaluation and management. J Clin Endocrinol Metab. 2015;100(6):1812-1824. doi:10.1210/jc.2014-3712.

Peterson MD, Rhea MR, Sen A, Gordon PM. Resistance exercise for muscular strength in older adults: a meta-analysis. Ageing Res Rev. 2010;9(3):226-237. doi:10.1016/j.arr.2010.03.004.

Basaria S. Male hypogonadism. Lancet. 2014;383(9924):1250-1263. doi:10.1016/S0140-6736(13)61126-5.