Your Inner Ecosystem: A Gut Flora Guide for Women Who Train
Before you lift a weight, run a kilometre or take your first sip of the morning, you are already carrying an ecosystem measured in trillions. Your gut microbiota works continuously with the parts of food your own enzymes cannot finish. But what do lactic acid bacteria, CFU and all those Latin names actually mean? This guide takes you inside the ecosystem — and explains exactly what the bacterial cultures in The Daily Performance are.
The ecosystem you carry
Scientists estimate that a typical adult body contains about 38 trillion bacterial cells — roughly the same order of magnitude as the number of human cells. Most live in the large intestine, where hundreds of species form a community called the gut microbiota.
That community is personal. Its composition varies between people and changes over time with diet, environment, age and everyday life. Think less of a fixed collection and more of a living city: many populations occupying different niches, exchanging substances and responding to what arrives.
What happens when fibre reaches the colon
Your own digestive enzymes break down much of your food before it reaches the large intestine. Some fibres escape that process. There, bacterial enzymes take over and ferment them.
During fermentation, the microbes transform fibre into smaller molecules, including short-chain fatty acids such as acetate, propionate and butyrate. These molecules can be used locally by cells in the intestinal wall or absorbed and transported elsewhere. It is a biochemical production line operating out of sight, meal after meal.
This describes the normal biology of the resident gut microbiota. It should not be read as a health claim for any particular bacterial supplement.
Why they are called lactic acid bacteria
Lactic acid bacteria are a broad group of microorganisms that convert carbohydrates into lactic acid. Humans have worked with them for thousands of years without seeing them: they help transform milk into yoghurt, cabbage into sauerkraut and flour into sourdough.
“Lactic acid bacteria” describes what the organisms are. It does not, by itself, promise a particular health effect. That distinction matters when you read a food label in Europe.
Genus, species, subspecies and strain
A bacterial name is an address that becomes more precise with every part. In Bifidobacterium longum subsp. infantis, Bifidobacterium is the genus, longum is the species and infantis is the subspecies.
A strain identifier, when provided, narrows the identity further to a particular lineage within that species. Research on one strain cannot automatically be transferred to every other strain of the same species.
The ingredient declaration for The Daily Performance identifies all ten bacterial cultures by species or subspecies, so you can see which organisms the complex contains.
What 5 billion CFU actually means
CFU stands for colony-forming units. It is a laboratory estimate of how many viable microorganisms are capable of forming colonies under specified test conditions. It is a count, not a weight.
The Daily Performance provides 5 billion CFU per daily scoop across ten bacterial cultures. The figure sounds enormous because bacteria are microscopic. Compared with an intestinal ecosystem measured in trillions, it is better understood as a defined daily addition — not a replacement for your existing microbiota.
A bigger CFU number is not automatically a better product. The number only becomes meaningful together with the identity of the cultures, the daily serving and appropriate storage.
Why we use “lactic acid bacteria”
European Commission guidance classifies “contains probiotics” as a health claim because the word implies a health benefit. There is no general authorised EU health claim for the bacterial complex in The Daily Performance, so we describe the contents factually as lactic acid bacteria and state the number of CFU.
The EU does authorise one narrowly defined claim for specific live yoghurt cultures and lactose digestion when strict conditions are met. That claim concerns yoghurt or fermented milk containing specified starter cultures; it does not apply to The Daily Performance.
Clear language is not less ambitious. It tells you exactly what is in the product without turning an interesting area of biology into a promise the evidence and legislation do not support.
How to read a bacterial-culture label
- Identity: look for the organisms by species or subspecies, not only a generic “culture blend”.
- CFU per daily serving: check the amount you actually consume, rather than a number without context.
- Number of cultures: understand how many different organisms make up the stated total.
- Storage: follow the instructions that protect a product containing living cultures.
- Claims: separate factual information about contents from authorised statements about health.
Lactic acid bacteria in The Daily Performance
The Daily Performance contains ten bacterial cultures providing a combined 5 billion CFU per daily scoop. The complete list is printed in the ingredient declaration and includes species from Bifidobacterium, Lactiplantibacillus, Lacticaseibacillus, Levilactobacillus and Lactobacillus.
The cultures were selected for a daily powder formula designed for room-temperature stability. Store the pouch cool, dry and tightly closed, as stated on the label.
For us, quality starts with what can be checked: ten identified cultures, a clearly declared 5 billion CFU per serving and straightforward storage instructions. They sit alongside 28 other active ingredients in The Daily Performance — one considered part of a complete morning routine for women who train and intend to keep going.
- Sender R, Fuchs S, Milo R. Revised Estimates for the Number of Human and Bacteria Cells in the Body. PLoS Biology 2016;14(8):e1002533.
- European Commission. Guidance on the implementation of Regulation (EC) No 1924/2006 on nutrition and health claims. European Commission.
- Commission Regulation (EU) No 432/2012, list of permitted health claims. EUR-Lex.
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