Männer im 24-Stunden-Zyklus: Wie Hormone Training, Arbeit und Beziehung steuern

Men in a 24-hour cycle: How hormones control training, work, and relationships

August 21, 2025

When hormones and mood are discussed, the focus almost always falls on women. The female menstrual cycle, with its distinct phases, is socially well-known, medically well-researched, and ubiquitous in relationships. Men often show understanding when their partners experience low moods.

But while men acknowledge the female pattern, they often overlook their own. The male body also follows a cycle. It's shorter, less noticeable, and repeats itself every day: a 24-hour hormonal rhythm that influences our thoughts, actions, performance, and relationships.

This article shows how this daily cycle works, what it means for sports, work and partnership, and why it's time for men to take it as seriously as the female cycle.

6:00 AM to 10:00 AM – Morning Fire

Most men wake up during this phase with a hormonal surge. Testosterone and cortisol are at their peak. Biologically, this means the body is preparing energy for fighting, reproduction, and activity. Psychologically, it means clarity, focus, and a drive to act.

In sports, this is the best time for strength training. Studies show that men have high testosterone levels in the morning, which supports muscle growth and performance. Squats, deadlifts, or bench presses – those who train in the morning benefit from their body's biochemistry.

At work, this is the phase in which important decisions are easier to make. Negotiations, presentations, or difficult planning – these can be tackled with energy and clarity in the morning.

However, mornings pose a particular risk in relationships. Cortisol is a stress hormone. In combination with testosterone, irritability increases. Arguments at the breakfast table can escalate faster than either party would like. Those who are aware of this can consciously avoid exacerbating conflicts when hormone levels are already high.

11:00 AM to 2:00 PM – Objectivity and stability

During the midday hours, cortisol levels slowly decrease. Testosterone remains stable, but lower. Men are now in a more objective, controlled state.

This is a period of peak productivity at work. Complex tasks requiring concentration are particularly successful now. Negotiations and conversations with colleagues also tend to be more relaxed.

In relationships, this is the moment when conflicts can best be resolved. Your mind is clear, and irritability decreases. Many couples report that conversations feel more constructive at this time of day.

For sports, this phase is suitable for shorter, intense sessions such as sprints or interval training. The body can perform at a high intensity without overloading the nervous system.

3:00 PM to 6:00 PM – Peak Performance

The afternoon is the time of peak performance. Body temperature is at its highest, muscles are optimally supplied with blood, and coordination is improved. Nerve impulses travel faster, meaning that strength and technique work together ideally.

In sports, this is the period for peak performance. Those aiming for personal bests often achieve them in the afternoon. Weightlifters, sprinters, and ball sports athletes deliver their strongest performances during this time.

This boost can also be used at work. Creative processes, complex problem-solving, and team projects benefit from the increased performance.

An interesting dynamic emerges in relationships at this time. Anger or frustration that has built up during the day can boil over during this phase. Those who use sport as an outlet prevent anger from erupting uncontrollably. Instead of arguments, there's training; instead of injury, there's exercise.

7:00 PM to 10:00 PM – Shutdown

As evening approaches, testosterone and cortisol levels drop. Fatigue sets in, and performance declines. Men experience their daily low point here – comparable to the mood swings women go through during their menstrual cycle.

The difference: Women experience hormonal lows over several days, men every evening. Both patterns deserve understanding. While women have cycles of approximately 28 days, men go through the same process in 24 hours.

This is a delicate phase in relationships. After a long day, men are exhausted and less resilient. Discussions or conflicts therefore often escalate, especially in the evening. Those who are aware of this can consciously focus on de-escalation.

For exercise, light movement, stretching, or yoga are ideal. Strenuous workouts cost more energy than they provide at this stage. It's better to allow the body to regenerate.

11:00 PM to 5:00 AM – Invisible setup work

During sleep, growth hormone takes over. Muscles regenerate, nerves are repaired, and memories are processed. Insufficient sleep during this phase disrupts this regenerative process.

Poor sleep means lower testosterone levels the next morning, increased irritability, and a weaker immune system. For athletes, this means no progress despite training. For work, it means decreased concentration. For relationships, it means reduced patience and increased susceptibility to conflict.

Sleep is not a luxury. It is the basis for performance, health, and emotional stability.

The comparison to the female cycle

Women experience a menstrual cycle of approximately 28 days, during which estrogen, progesterone, and testosterone levels rise and fall in different phases. These fluctuations explain mood swings, energy spurts, or increased resilience. Men go through the same process—only in 24 hours.

Both patterns show that mood and performance are not just a matter of personality, but are also biologically determined. While men should learn to take their partners' fluctuations seriously, they should also acknowledge their own patterns.

Understanding must go both ways. Recognizing that the evening is not the best time for long discussions protects not only oneself but also the relationship.

Personal perspective

It took me a long time to understand this rhythm. I used to think I was just irritable in the evenings or too impulsive in the mornings. Now I know: It's biochemistry.

When I make important decisions in the morning, I take advantage of my hormonal boost. When I train in the afternoon, I achieve peak performance. When I notice my patience waning in the evening, I hold back and seek rest or exercise instead.

Some people sleep on important decisions. I train beforehand. Afterwards, I have a clear head, a more stable mood, and the feeling that I've truly made the decision from within myself.

Training time: Do you use your rhythm – or do you fight against it?

Many studios already include it in their training plans: "Evening plan recommended." And we also frequently get the question: Is that even suitable? Or is it counterproductive to train in the evening?

The research provides clear signals:

Performance levels are higher in the evening : Studies show that between 2 pm and 6 pm – i.e., in the late afternoon – body temperature, muscle strength, and coordination function best. This time is perfect for peak performance at the gym.
Greater muscle growth : Long-term higher muscle mass was observed in evening trainers: In a 24-week study, evening groups performed better than morning groups.
Training at any time of day is better than none : Ultimately, consistency is what counts. Researchers emphasize: Whether morning or evening – the main thing is to stick with it.
Heart and health react differently : Morning sessions may be more effective for heart health and metabolism, reducing the risk of heart attack or stroke in men and women.

Conclusion

The male 24-hour cycle is not a theory, but lived biology. It influences sports, work, and relationships. Those who understand it live not by chance, but in rhythm.

It's not about excusing weaknesses. It's about recognizing patterns and acting consciously. Men who understand their cycle train smarter, work more efficiently, and have healthier relationships.

Sources for your own research

– Axelsson, J. et al. (2005): Hormonal profiles in relation to sleep: circadian rhythms and homeostasis. Journal of Clinical Endocrinology & Metabolism.
– Bribiescas, R. (2006): Men: Evolutionary and Life History. Harvard University Press.
– Czeisler, CA, & Gooley, JJ (2007): Sleep and circadian rhythms in humans. Cold Spring Harbor Symposia on Quantitative Biology.
– Dabbs, JM (1990): Salivary testosterone measurements: reliability across hours, days, and weeks. Physiology & Behavior.
– Reilly, T., & Waterhouse, J. (2009): Sports performance: is there evidence that the body clock plays a role? European Journal of Applied Physiology.
– Walker, M. (2017): Why We Sleep. Scribner.