Pre Workout: The 2 Things Experts Actually Back

Walk into any supplement shop and the pre workout shelf is a wall of neon tubs promising explosive energy. Strip away the marketing and ask which ingredients the people who actually read the research keep bringing up on their podcasts, and the list gets short fast. Across Joe Rogan, Diary of a CEO and Andrew Huberman's guests, two things come up again and again: creatine, and the nitric oxide you build from your food.

This is not a ranking of products nobody tested. It is a record of what named experts said on the record, with the timestamp for each clip so you can hear the reasoning yourself and decide.

If there is a single supplement these hosts agree on, it is creatine. Rhonda Patrick, the biochemist who turns up across all of these shows, keeps it simple about which version to buy. She said the one she takes is creatine monohydrate, because it is the most well studied form on the market.

She is not shy about the dose either. Patrick said she takes 10 grams a day, every day, and feels great doing it, adding that she has to have her 10 grams of creatine for her brain. That last part matters, because it points to a benefit most tubs on the pre workout shelf never mention.

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Joe Rogan makes the same point bluntly. He said creatine is not just a supplement for muscles, that it is actually a really good cognitive function supplement, and that it is great for everybody. Actor Bradley Cooper, on Rogan's show, said he had started taking creatine a couple of months earlier and called it incredible, incredible for your brain as well.

Nutrition researcher Chris Masterjohn framed it as close to a default. He said everyone who is not eating one or two pounds of meat per day should probably be taking creatine, since meat is where you would otherwise get it. Read together, the message is that creatine is less an exotic pre workout booster and more a daily baseline for anyone who trains.

None of them oversell the gym effect, which is part of why it lands. Physiologist Lauren Colenso-Semple, on Huberman Lab, put the performance benefit in plain terms: creatine can get you an extra rep or two in the gym, or cut a second off your sprint. She added that it is very safe and well studied, and that for people who are training and interested, it is worth taking.

An extra rep and a slightly faster sprint is a modest, honest claim, not a transformation. That is the tell of an ingredient that survives scrutiny. The people who understand it best describe a small, reliable edge rather than a miracle.

The other ingredient the experts keep circling is nitric oxide, the molecule behind the pre workout pump and better blood flow. On Diary of a CEO, a nitric oxide researcher explained why it fades: by age 40 we lose roughly half of our nitric oxide production, and people aged 70 to 80 can make about 75 percent less than a 20 year old. That decline is a big part of why pre workout formulas try to boost it in the first place.

His more useful point for anyone planning a pre workout meal is where the molecule comes from. He said humans lack the enzyme to convert the nitrate in food, so we are essentially 100 percent dependent on the bacteria in our mouth to turn dietary nitrate into nitric oxide. Without the right oral bacteria, he said, you get zero nitric oxide benefit from even a plant heavy diet, which means a nitrate rich meal only pays off if you have not wiped those bacteria out.

The same researcher pointed to a lever that is free. He said nasal breathing and humming activate the nitric oxide enzyme in the sinuses, which helps open blood vessels and lower blood pressure. Breathing through your nose on the way to the gym, rather than through your mouth, is a small habit with a real mechanism behind it.

On a separate Diary of a CEO episode he put a number on the stakes, saying nitric oxide levels drop 80 to 90 percent between ages 30 and 70, and calling erectile dysfunction the canary in the coal mine for the same blood flow problems. Whatever you make of his bigger claims, the training takeaway is simple: protect your nitric oxide with food and breathing before you reach for a tub.

What should I eat before a workout?

For the pump, the nitric oxide expert on Diary of a CEO points to nitrate rich foods, but he stresses they only work if the bacteria in your mouth are intact to convert the nitrate. For strength and recovery, the more consistent advice across these shows is a daily dose of creatine rather than any one magic pre workout meal.

Does pre workout actually work?

The flashy tubs promise a lot, but the ingredients with the strongest named backing in these interviews are just two: creatine, which Rhonda Patrick calls the most well studied option, and nitric oxide, which you can support through food and nasal breathing. Both are real, though the effects the experts describe are modest edges rather than overnight change.

Is creatine safe?

Lauren Colenso-Semple, speaking on Huberman Lab, called creatine very safe and well studied and said it is worth taking for people who train. This is a summary of what podcast guests said and not medical advice, so talk to a doctor before starting any new supplement.

The pre workout aisle wants you to believe the answer is complicated and expensive. The experts who actually study this keep landing somewhere simpler: take your creatine, eat for your nitric oxide, breathe through your nose, and save your money on the neon tubs. This is a summary of what podcast guests said, not medical advice, so check any new supplement or dose with a doctor first. Use the timestamps above to hear each claim in full and judge the source for yourself.