In this Community Hotline episode, Mario and Max answer your questions about blood tests, supplements, and sports nutrition. They explain why maltodextrin can be easier on the stomach during endurance exercise, discuss the infection risks associated with raw milk, and put elevated homocysteine levels into medical context.
In her early thirties, a multiple sclerosis diagnosis suddenly changed sports journalist Anna Kraft’s life. Mario and Max speak with her about how she manages chronic fatigue through a radical dietary change, targeted pacing, and comprehensive blood testing. The two physicians also assess the risks of vitamin overdoses and explain the three fundamental pillars of healthy longevity.
Breathe through your nose instead of your mouth? Mario and Max explain how nasal breathing more than doubles the release of nitric oxide, thereby noticeably increasing oxygen saturation in the body. They also explore how nasal strips, mouth taping, and nasal rinses can help with blocked airways.
Take a warm shower in the evening to cool down and fall asleep faster? Mario and Max explain the physiological process behind vasodilation and how a controlled drop in core body temperature can improve sleep efficiency. They also reveal why timing is crucial—and why just ten minutes in the sauna can be enough.
Acute stress cannot be switched off through willpower alone—but it can be regulated through breathing. Mario and Max explain the neurobiological effects of the physiological sigh, also known as cyclic sighing. They show how a double inhale reopens collapsed alveoli and how a slow exhale activates the vagus nerve.
Should you drink coffee immediately after waking up or wait 90 minutes? Mario and Max examine the widespread biohacking myth surrounding cortisol stacking and the typical afternoon slump. They explain why the timing of your last coffee is usually far more important for sleep quality than your first espresso of the day.
If you struggle to get out of bed in the morning, a lack of natural light indoors may be the reason. In this biohack, Mario and Max explain how daylight can increase morning cortisol levels by up to 40%—and why regular bathroom lighting simply isn’t enough.
Cold showers in the morning for better focus and fat burning? Mario and Max debunk myths about brown adipose tissue, explain how cold actually affects the nervous system, show how box breathing helps during ice baths, and explain why people who take cold showers get sick less often.
Constantly distracted, yet able to spend hours on something you love—is it ADHD? Medical Doctors Mario Gietl and Max Griessinger explore adult ADHD, dopamine, hyperfocus and late diagnosis. Plus: treatment approaches, a listener’s question about being diagnosed at 41, and this episode’s biohack on sleep timing.
Even one alcoholic drink can disrupt sleep, increase next-day stress and cause cellular damage. We explain why there is no risk-free level of alcohol consumption—and why drinking can still feel relaxing at first.
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