The Feed Insider

This guide breaks down what athletes usually mean by lactic acid, what drives that burning sensation, and how to reduce lactic acid build-up during training.

The best supplements for running back your body where endurance, energy production, oxygen delivery, hydration, and overnight recovery start. They don't make up for hard work, they support it. Here are the best supplements for endurance.

Starting today, I'm rebuilding how you shop with us. Learn about our new mix-and-match gel builder that gives you more control. Plus, the ICE Hat that saved Magnus Ditlev at Kona is finally here — ready for your hottest sessions.

Demi Vollering just won her second Tour De France Femmes title, and she didn't do it on just one good day. She won it by showing up to stage nine as strong as stage one, and that comes down to how she was able to fuel day after day of racing.

Athletes have gotten more serious about recovery, and that's changed what they expect from a wearable. Recovery metrics, HRV, and sleep analysis now sit next to normal training data, and a lot of athletes want a simpler device to track it. Here are the best screenless fitness and recovery trackers and what you can expect from them.

Longevity isn't about slowing down; it's about staying able to train hard, recover well, and keep loving your sport for decades. Here are the three supplements that consistently earn a spot in that conversation.

Creatine research is rock solid. Creatine quality control is not. Labeled doses don't always match what's in the container, and third-party testing is the exception, not the rule. Here is how to pick your creatine and the different formats you can choose from.

Athletes ask us about protein more than almost anything else. Not only that, a new study in Sports Medicine just moved the target higher than we previously believed. Here's how to actually hit that number without living on just shakes.

Your bloodwork says your iron is fine. Your legs say otherwise. Turns out both can be true. Here's the mechanism nobody explains and how this colostrum gets it right.

Kirsten Kasper came into IRONMAN 70.3 Boise with a bad back, a missed race, and a goal of top five. She left with the win — after coming off the bike five minutes down and running through the field on the back half. She breaks down exactly how it happened.

It's time to reflect on the hottest products of the summer season so far — backed by data from you. From the stuff we can't keep on the shelves to the biggest launches of the year, here's the summer recap.

Most performance supplements overpromise. Sodium bicarbonate doesn't — the science on bicarb is solid, and even the IOC calls it one of the most effective legal performance enhancers out there. From ultras to time trials, here's why bicarb is suddenly everywhere.

Moriah "Mo" Wilson embodied the true spirit of sport and competition. Her legacy will continue to inspire, support, and enable people to get outside and do what they love.

Vive la France. The Tour has reached its final stop in Paris, and we are still reeling from the drama of the past three weeks. In reflection, here are three of the biggest takeaways from this year's Tour.

Nomio's pitch sounds absurd on paper, until you hear pros talk about it. This broccoli-sprout shot with eight years of Swedish research behind it is becoming one of the most widely used performance supplements across sport. Here's what the athletes are saying.

Two championship races. Two very different outcomes. That’s the reality of racing at the highest level—sometimes everything clicks, and sometimes the lessons are even more valuable than the result. Marc recaps a career-best performance at IRONMAN 70.3 Happy Valley, followed by the challenges of racing the European Championship in Jönköping.

Three FKT attempts. Seven days. Rob set out to chase three UK routes back to back — and got exactly the season he'd been having all along: demanding, honest, and definitely not to plan.

Melisa Rollins is the 2026 Marathon MTB National Champion. But just three months ago, she had a broken elbow and a season in jeopardy. She talks us through the injury, the comeback, and the perspective that got her a national title.

Maurten just launched something new, and it doesn't fit in any category. It's lighter than a gel, thicker than a drink, and it's packed with stomach-safe carbs — 120 to be exact.

What do the best in the world do on a rest day? After a grind up some of the most grueling mountains in the world, the answer is all about recovery. And this is what they're all grabbing as soon as the stage is over.

The Tour is in the thick of it, and the GC riders are eating to a tested carb-per-hour plan religiously. Most long-distance cyclists never build that plan for themselves. Tour de Feed Fueling Packs are an easy way to find your fuel so you can build a plan for your next long ride.

Six hours of racing boils down to this: a few hundred meters, a pack of screaming legs, and whatever's left in the tank. Here's what pros are putting in that tank.

Savilia Blunk just wrapped two months of back-to-back World Cup racing across Europe. She talks us through the nutrition habits, travel rituals, and small daily decisions that kept her thriving through one of the most transformative blocks of her career.

Ten stages in, and I've spent the week working my phone — calling contacts, texting people at the finish lines — to find out what's actually in the bottles and gels riders are reaching for this year. Today: a green vegetable tied to the green jersey, Tadej's custom gel, and a fuel category most of the sport hasn't heard of yet.