When we exercise, the levels of thousands of substances in our bloodstream rise and drop, according to an eye-opening new study of the immediate, interior impacts of working out. The study is the most comprehensive cataloging to date of the molecular changes that occur during and after exercise and underscores how consequential activity — and inactivity — may be for our bodies and health.
Already, of course, we have reams of evidence that exercise alters our metabolisms, muscles, genes, immune responses, hearts, stamina and almost every other organ and biological system within us. But only in recent years, with the development of sophisticated new techniques for counting and typing the thousands upon thousands of different molecules within us, have scientists been able to quantify more of the substances and steps involved in those processes.
With these techniques, they have zeroed in on various sets of molecules in our bloodstreams associated with different aspects of our biology. This research generally is known as “omics” science. Metabolomics, for instance, enumerates and analyzes molecules in our blood that influence metabolism — everything from appetite hormones to enzymes excreted by gut microbes. Genomics maps the molecules involved in gene expression; proteomics ditto for proteins; lipidomics for fat-related molecules; and so on.
Our Exercising, Our Selves: How a workout creates a “molecular symphony.” Incredible. https://t.co/cBUtHRZ9vM
— Gerry Marzorati (@marzoTennis) June 11, 2020