Chad-Richardson on Ultrahuman Blog

5 heart rate variability (HRV) mistakes to avoid

Mon, 19 May 2025 20:38:22 +0000

The tracking of heart rate variability (the time interval between consecutive heartbeats in milliseconds) provides a great tool for gaining insight into your body and a better understanding of your mental and physical state.

This variation is modulated by the autonomic nervous system (ANS). If the ANS is in a fight-or-flight mode, the HRV tends to be lower, and when it’s generally in the rest and digest mode, the HRV is usually higher.

Sleeping Metabolic Rate: Burning Calories While You Sleep

Sat, 11 Dec 2021 11:31:00 +0000

Here’s a fun fact. On average, you burn around 50 calories per hour while sleeping.

Even when you’re sleeping, your body is still using energy. Your sleeping metabolic rate (SMR) refers to the rate at which your body is burning calories while you sleep.

In this article, you’ll learn about the surprising relationship between sleep and metabolism.

Your body never stops going. Even when you’re relaxing on the couch or just scrolling through social media, your body is working behind the scenes.

Immunometabolism 101: What is it and why is it important to you?

Tue, 26 Oct 2021 15:30:00 +0000

Immunometabolism examines the interplay between immunology and metabolism, our life force. In this article, we’re going to take a look at what immunometabolism is and why it’s important to you. But before we start to peel back the layers on that, let’s go over some basic concepts first that’ll make understanding immunometabolism a lot easier.

For starters, what is your immunity?

Immunity refers to your body’s ability to fight off toxins that can lead to disease. The parameters of immunity consist of various factors in your blood and in your cells. Every single cell that makes up your immune system comes from bone marrow. Your cells flow throughout your bloodstream, can be found in locations like your spleen or lymph nodes, or disseminated throughout other parts of your body. There are three main types of immunity.