How to Optimize Hydration with Dr. Heather Logan-Sprenger

I had looked at mild levels of dehydration. So this is like what many people walk around with on a given day. And what we saw was that metabolism is flexible. That means that we shift to more a preference to carbohydrates instead of fat during mild levels of dehydration. The majority of athletes are showing up dehydrated. And majority of exercisers are showing up dehydrated. And yet we have all this education out out there. Forty to sixty percent of people are still showing up to exercise in a hypo hydrated state. What we noticed was that in females, when they came hydrated to exercise, within even twenty minutes, they'd be losing point 5% of their body mass. And yet they were shifting metabolism to using more carbohydrates. And so if you're blowing through your carbohydrates more at that final push at the end of exercise, you can't get that next gear to really get the high intensity. This causes, you know, perceived effort to go up, causes you fatigue sooner. Yeah. The main takeaway for me, no longer could you drink to thirst. You actually had to have a performance strategy in place for hydration. Doctor Heather Logan Springer. Yay. So wonderful to have you here. This has been a long time coming. I've been wanting to get you in this chair and talk to you for so long. You have had just an an epic career that I I like, I'm continuously trying to wrap my brain around. Like, you're a dual sport national team athlete, like, national team athlete, which is wild to me. You played in in completely different disciplines. You were cycling, road cycling, and ice hockey, and you played for the Xfinity national team. That's just wild. And you also are a a renowned exercise physiologist. So you you kind of come at this from, you know, I think a place of just deep experience, and I'd love to know kind of how that just I think if you talk about your kind of athletic career just very generally and and how that led into, you know, kind of your scientific pursuits, that would be great place to start perhaps. Sure. That sounds great. First of all, thank you so much for having me here. Oh my gosh. Yeah. I love what you're doing in performance sciences here at WHOOP. So Thank you. It's a privilege to be able to talk to you and your team today. I think I I would like to start from the beginning because my curiosity around physiology began when I was a little girl. And I grew up in Northern Ontario, Canada, very cold, very isolated, and I spent all my time outside and just observing things. Oh my gosh. So this is the same? Yeah. It's the same. So this was, like, observing how my cat grew thicker fur in the fall into the winter to, you know, for thermal regulation, to keep it warm and …