What can recreational cyclists learn from the cooling strategies used by the Tour de France peloton? In this episode of the Road Cycling Academy Podcast, Cam Nicholls is joined by RCA coach and exercise physiologist Ben Treble to unpack the science behind cooling strategies, heat acclimation, hydration and performance. With the 2026 Tour de France being one of the hottest on record, riders were seen using ice baths, cooling gloves, slushies and cold water immersion before stages. But do these strategies actually improve performance, and are they worth using for amateur cyclists? Ben explains the physiology of riding in hot conditions, why heat dramatically reduces cycling performance, and the evidence behind practical cooling methods that everyday riders can use before and during training and racing. Whether you're preparing for a gran fondo, summer road race, Zwift event or simply trying to survive hot weekend rides, this episode is packed with practical, science-backed advice. In this episode: Why the 2026 Tour de France put cooling strategies in the spotlight What happens to your body when you ride in hot conditions How heat affects power output, recovery and endurance performance Heat acclimation vs simply riding in hot weather Ice baths, cooling gloves and pre-cooling strategies explained Do Slurpees actually improve cycling performance? The truth about pouring water over yourself during rides Cooling vests, ice socks and cold towels Does menthol actually help? Practical cooling tips for recreational and Masters cyclists Common mistakes riders make when racing in the heat If you're looking to perform better in hot conditions, improve your endurance, or simply understand the science behind what the professionals are doing, this episode is for you. Learn more about Road Cycling Academy coaching: https://roadcyclingacademy.com Podcast Sponsor: https://onekloudx.com.au/ #cycling #cyclingtraining #tourdefrance #endurancetraining #heattraining #cyclingperformance #roadcycling #granfondo #masterscycling #hydration #cyclingpodcast Transcript: Cam Nicholls (00:01.826) Welcome to the RCA Podcast, designed for recreational and amateur road cyclists with a focus on performance. We dive into cycling training, nutrition, strength training for cyclists and even bike fitting tips, all designed to help you train smarter, ride faster and hopefully tear your mates' legs off. So without further ado, let's dive into today's episode. Welcome back to the RCA podcast, where today I am joined by the RCA's science geek based in Switzerland now, Ben Treble. And today we're going to go through well, I wanted to ask Ben about the Tour de France, actually, because it's just been and gone. And there was a lot of scenes of riders with their arms in icy water or arms and hands in icy water. And I was like, that's interesting. Cooling strategies, Ben. But does this like relate to, you know, everyone that's watching them, we're all recreational and amateurs at the end of the day. Like, should we be paying attention to this? Like, is it something that, you know, the mere mortal should be leaning into? Should we be dunking our arms and hands in ice before we go out for our rides? Ben Treble (01:13.91) I think you should pay attention to it, Cam. How feasible is it for an amateur to pull off the same strategy though, at a fondo race? Probably pretty limited. Cam Nicholls (01:24.43) True. So why should I be leaning into it? What does the science say about the cooling strategies? Especially when it's hot, of course. Like, you know, if you live in Canada and you're you're riding in the middle of winter, you're probably not gonna worry about it, are you? Ben Treble (01:37.706) No, not necessarily. You're probably worried about hypothermia instead. Yeah, look, I think the tour is a pretty special case this year. I'm over in Switzerland and we've we had some pretty severe heat waves even here for Switzerland, which you'd think as an Australian I would be pretty well well established to cope with, but it was I can tell you it was some of the hottest periods I've gone through. The two are I think I read this stat the other day. The two are averaged in the first two weeks thirty point eight degrees. Now, that may not sound super crazy, but to be an average for two weeks where every day is over thirty, the previous record was twenty-five point nine in twenty-two. That is enormous. Like to have a a two week average temperature to be four degrees higher than the last record. To me that's what stands out the most. Anyway, so it was an extremely hot start to the tour. In fact, the majority of the tour. Stage eight was hitting forty degrees. They cut stage nine short because of the extreme heat protocol from the UCI, which I think is a it's a good thing it's in place and it it worked and whatnot. Yeah, what else did we read that was pretty interesting before we get into the real physiology of it? Picnic post NL put up that they were going through twenty eight bottles per rider per stage, which was three times the normal number of bid-ons that they use. Cam Nicholls (03:12.704) Well, crazy. Ben Treble (03:14.902) So safe to say, I think why does this matter? Well, for the Aussies back home who listen to this, they're you probably used to the heat and probably already put in place a fair amount of attention to being able to ride in the heat safely. Maybe they already do some heat training potentially, or they at least think that riding in the heat is their heat training. Maybe not. you'll find out later. And you know, what else can we do to cool down in the meantime? So I think there's a lot in this, Ken. Cam Nicholls (03:49.198) Can I just like my little anecdote that I'd like to share at a recreational and an amateur level? Yep. And it's not even cycling, it's triathlon. I know we shouldn't be talking about triathlon on the Road Cycling Academy podcast, but I'm going to. So I've done the Noosa triathlon the last two years. It's the the biggest Olympic distance triathlon in the world. It's big event. I don't do very well because I'm not a very good triathlete, but on the run. Not last year, the year before, the first year I did it. my daughter gave me a little bit of ice. I just put down my back. Because it's very hot in Noosa during November when this is on. Like I'm talking, you know, like early 30s, high humidity. By the time you're doing the run, which is a five kilometer run, you're getting quite hot. I had my heart rate monitor on. She gave me the ice. I dropped it down my tri-suit and it went down my it actually slid down my spine essentially. But I noticed my heart rate dropped. Probably three beats, which may not sound like a lot, but when you're pushing threshold when I was I guess essentially during a ten kilometer run, which is what I was doing. It enabled me, I I noticed that all of a sudden I could run at a faster pace. So the next year, which was last year, I got it to drop me ice on the way up and on the way back. And it was almost instantaneous, like energy. Even though I was, you know, I wasn't consuming anything. It was just The heart rate dropping and the ability to to go a little bit higher. So I see what the pros are doing and I'm like, yeah, I completely understand why they are doing it just from my own little baby recreational experience at the Noosa triathlon. Ben Treble (05:31.03) Well, let's find out why why that may may have helped you out from a few different angles. Maybe I thought it's good to talk about I think a lot of people talk about the heat and they don't necessarily fully maybe understand what's actually happening. We know that when you ride in really hot weather, it affects our performance. You feel hot and you know, generally your your core body temperature starts to go up at some point and affect your performance. Cam Nicholls (05:36.439) Okay. Ben Treble (05:58.626) But I don't know if we really quite talked about this, or people don't necessarily go too deep on it. So that's what we're going to try and do a little bit here, at least to begin with. So let's talk about what happens when you ride a bike. So that could be in the trifulone or for most of our audience, masters athletes. You can think of your body as a as a space heater. So when you produce, so you push the pedals, right? You're going to produce energy. And Only about 20, maybe 25% of your energy from metabolism that fuels those contractions gets converted to mechanical work. The remaining sort of 75 to 80% of that energy gets released as heat. So yeah, exercise raises our heat production above rest rates about 10 to 15 times. There's a big range because there's huge variance across, you know, say untrained to well-trained and elite athletes. So I'm giving you some pretty broad ranges, but it's for a reason. You know, during strenuous exercise, your active muscles are going to produce potentially 100 times more heat than at rest. Right? So what does this look like in numbers? Well if say you're sort of a a general rider amateur, let's say you know between 250 to 350 watts, this would be like an above threshold effort. You're probably producing anywhere from 800 To 1200 watts of heat, right? So if you're a master's rider, if you're at a lower wattage, say 180 watts, you're still producing another 650 watts out of in terms of heat. If you're to talk in watts, I know we love watts. Let's talk watts instead of percentages. So I'll let that sit with you for a second, and we can take it a little bit deeper when we talk about. You know, I have a great textbook, one of my favorite scientists, George Brooks. His exercise book is a bit of a Bible. it goes a little bit more in depth, right, and starts to talk about one of the best ways our body cools down is through evaporation. Now, if we didn't have that evaporative cooling, right, and there are circumstances where it's not functioning very well, your body te