Let your body rest properly and don’t let that condition go chronic. Overtraining does exist and the threshold to that is different and it varies from people to people. This doesn’t mean that your body can’t overtrain itself. Most people monitor their muscles to determine if they should train or not. When your sperm takes a hit like that, then your testosterone is bound to follow. This Spanish study found out that overtrained elite cyclists saw a 50% drop in sperm count, and their testis and pineal gland were also exhausted. In the 2007 Journal of Applied Psychology, too much training was shown to wreck the immune system which caused colds and flu-like symptoms for the subjects. In addition, from work in an animal model,12 it appears that the pro-dynorphin (Pdyn) gene is upregulated with a period of intensive exercise. Cortisol is known to interfere with testosterone’s androgen receptor binding.11 It is also possible that increased testicular vascular resistance leads to a lowering of blood flow and therefore a blunting of testosterone in blood. During periods of chronic stress exposure, a suggested cortisol resistance can occur, leading to a lowered cortisol response to stress due to an interplay between the nervous, endocrine and immune systems.10 It is likely that a desensitisation of the adrenal glands or a dysfunctional hypothalamus or pituitary gland are the possible cause of the reduction in cortisol. This is one of the most common questions we hear from athletes who’ve finally acknowledged they’ve pushed too hard. This is the point where training is no longer building you up—it’s actively tearing you down. A depressed ratio signals the body is in a state of breakdown. This cognitive decline reflects both hormonal imbalance and central nervous system fatigue. You forget workout details, struggle to concentrate at work, and have lost the fire that used to fuel your training. Both groups showed significant increases in serum testosterone concentrations immediately and 5, 10, and 15 min post-exercise. The effect of exercise on serum testosterone concentrations in older men is not clearly understood. Sheikholeslami-Vatani et al. investigated the acute effect of different resistance exercise orders on serum testosterone concentrations in untrained normal weight and obese men. Studies investigating the effect of exercise on serum testosterone concentrations in overweight and obese individuals also show conflicting results. In this and the following, section, we will discuss how obesity and aging, respectively, affect the exercise-induced changes in testosterone concentrations. So far, we have discussed works done in lean, young men; however, body weight and aging are inversely related to serum testosterone concentrations . Your body needs a break from the chronic stress signal. This means fewer sessions per week, lower intensity, and prioritizing active recovery (walking, yoga, light swimming). Implement a Structured Deload or Training BreakReduce training volume by 50–70% for at least 2–4 weeks. The longer you ignore the symptoms, the more complex and prolonged the recovery process becomes. At this stage, medical evaluation and potential hormone replacement therapy (HRT) may be necessary to restore baseline function. This includes significant training volume reduction (50–70% decrease), nutritional periodization, stress management, and, in some cases, targeted supplementation (Vitamin D, Zinc, Magnesium). All of these components, strength-power-oxygen content-VO2max, are critical factors in the performance of a multitude of sporting activities and essential elements in the exercise training adaptation process (16, 32, 33). The most visible effects of rising testosterone levels begin in the pre-pubertal stage for males. Testosterone threshold levels for diagnosis of hypogonadism and, or androgen deficiency (also called testosterone deficiency) (18). Nevertheless, and importantly though, the universal agreement does not currently exist in the world-wide medical community on what is precisely normal testosterone levels. Total testosterone encompasses the free and carrier-protein bound levels of the hormone, while free refers only to that portion not bound to a carrier-protein in the circulation.