The hottest Physiology Substack posts right now

Presence and connection are fundamental for good sex.
Good sex involves losing oneself in the experience and feeling a deep connection.
Men should pay attention to individual preferences and prioritize presence and vulnerability over technique and endurance.

Women and men think differently due to biological differences like having a uterus, leading to significant psychological variations.
Men and women face different stakes in relationships and reproduction, with women having higher commitments and limitations due to their reproductive capacity.
Evolutionary factors have shaped men to compete for access to females, leading to traits like dominance, aggression, physical strength, and risk-taking behavior.

Genes affect all kinds of traits and behaviors in animals, including humans.
Physical appearance and body language play a significant role in human interactions and societal outcomes.
Changes in technology and society can impact evolution and genetic traits over time.

Altitude training can improve performance by increasing red blood cell production.
Training at high altitude may not be enough on its own; 'live high/train low' might be the key to performance gains.
Shorter recovery time, iron supplements, and acclimatization time are important considerations for high-altitude training.

All living things are made up of enzymes that catalyze chemical reactions in our bodies
Enzymes play a crucial role in maintaining balance and homeostasis within our bodies
Evolution has shaped enzymes to help organisms adapt to changing environments and survive

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Your physiology and biochemistry, not your circumstances, play a key role in determining your potential and performance.
Optimizing recovery is crucial for reaching peak performance, reducing risks of burnout and enhancing physiological resilience.
Personalized approaches that consider unique biochemical and physiological profiles are vital in unlocking individual potential for peak performance.

Breathwork is essential since the breath is a constant companion, affecting both body and mind.
Various breathing techniques can be used for specific effects like calming the nervous system, increasing alertness, or improving oxygen absorption.
Understanding the different elements of breathing, such as nostrils, lungs, and techniques like Breath of Fire, can lead to improved well-being and mind-body connection.

Affect is a composite of many factors including valence and arousal
The brain maps the body to process interoception and simulate different body states
Feelings are mental representations of different body states, indicating the brain generates and simulates feelings

Use breathwork to regulate and positively impact your internal state in real-time
Practice 'state over story' by leveraging your physiology to shift blood chemistry and regulate the nervous system
Implement automation recipes like 'espresso breath' and 'breath of calm' to up or down-regulate your nervous system

Bile is described as irritability and prickliness, associated with making choices and rejecting alternatives.
In American business culture, showing bile or criticism is often viewed negatively, seen as a flaw in character.
The theory of temperament based on humours, like black bile and yellow bile, influences personality traits and physical symptoms.

Recognizing panic attacks can vary among individuals.
Panic can be triggered by different mechanisms, such as suffocation alarms or internal signals.
There are various types of panic, including external fear, separation distress, and physiological reactions.