Do long-term relationships lower testosterone levels?
Testosterone is also known as the male hormone. It has been suggested that testosterone levels are associated with seeking new sexual partners. From an evolutionary standpoint, lower testosterone levels may result in men that are more loyal to their partner and more likely to care for their offspring. How do relationships affect testosterone levels?
[Read more…] about Long-term relationships lower testosterone?Can endurance training support muscle mass gains with resistance training?
The smallest blood vessels (capillaries) in muscle tissue are responsible for the delivery of oxygen, nutrients, and growth factors. It has been shown that older adults with a low number of muscle capillaries have impaired muscle mass gains during resistance training.
How fast can aerobic capacity be improved?
Aerobic capacity is the maximal rate of oxygen consumption (VO2max). It reflects an individual’s maximal rate of aerobic energy production and is commonly used to reflect general fitness status and especially success in endurance sports.
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Does growth hormone affect muscle and tendon growth?
Growth hormone is often claimed to play an important role in muscle and tendon growth. However, this suggestion is based on animal work. Is this also true in humans?
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Can insufficient sleep increase the chance of developing a common cold?
Poor sleep is associated with susceptibility to acute infectious illness. In addition, sleep deprivation has been shown to negatively affect immune system functioning. Does this mean that you have a higher chance of getting sick when getting insufficient sleep?
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Can excessive training impair metabolic health?
Exercise training can improve exercise performance, mitochondrial function, and blood sugar control. However, it’s well known by athletes that too much training (overtraining) can hinder performance. Can excessive exercise volume also have a detrimental impact on metabolic health?
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