Dr. Stacy Sims

So inherently, women don't need as cold. Thank you. We don't? No. Why? When we're looking at stress response, because that's how I view all of the environmental and exercise things, is what kind of stress it puts on the body.

So inherently, women don't need as cold. Thank you. We don't? No. Why? When we're looking at stress response, because that's how I view all of the environmental and exercise things, is what kind of stress it puts on the body.

So inherently, women don't need as cold. Thank you. We don't? No. Why? When we're looking at stress response, because that's how I view all of the environmental and exercise things, is what kind of stress it puts on the body.

When a woman gets into ice cold or cold water and gets in there and invokes such a severe, strong stress response, much stronger than a male's response, that her body goes into a more of a shutdown phase where it invokes a sympathetic drive and it doesn't create the metabolic changes that we see with men.

When a woman gets into ice cold or cold water and gets in there and invokes such a severe, strong stress response, much stronger than a male's response, that her body goes into a more of a shutdown phase where it invokes a sympathetic drive and it doesn't create the metabolic changes that we see with men.

When a woman gets into ice cold or cold water and gets in there and invokes such a severe, strong stress response, much stronger than a male's response, that her body goes into a more of a shutdown phase where it invokes a sympathetic drive and it doesn't create the metabolic changes that we see with men.

If you were to take a woman and put her in 15 or 16 degrees Celsius, which is around that 55 degree mark, she'll end up with the same responses that a man has because it's not as severe shock to a woman's body as it is for a man's. Why is that? Because we have more body fat. So we tend to vasodilate and vasoconstrict first for controlling our temperature or men will vasoconstrict and sweat.

If you were to take a woman and put her in 15 or 16 degrees Celsius, which is around that 55 degree mark, she'll end up with the same responses that a man has because it's not as severe shock to a woman's body as it is for a man's. Why is that? Because we have more body fat. So we tend to vasodilate and vasoconstrict first for controlling our temperature or men will vasoconstrict and sweat.

If you were to take a woman and put her in 15 or 16 degrees Celsius, which is around that 55 degree mark, she'll end up with the same responses that a man has because it's not as severe shock to a woman's body as it is for a man's. Why is that? Because we have more body fat. So we tend to vasodilate and vasoconstrict first for controlling our temperature or men will vasoconstrict and sweat.

When they're cold? No, we're talking about just in general. Okay. So if we're taking a woman and putting her on ice, the body's first response to environmental change is severe vasoconstriction. And with women with Raynaud's, we have a stronger constriction response because it's a protective mechanism. For men, they'll constrict and then start shivering to induce heat. Women will just constrict.

When they're cold? No, we're talking about just in general. Okay. So if we're taking a woman and putting her on ice, the body's first response to environmental change is severe vasoconstriction. And with women with Raynaud's, we have a stronger constriction response because it's a protective mechanism. For men, they'll constrict and then start shivering to induce heat. Women will just constrict.

When they're cold? No, we're talking about just in general. Okay. So if we're taking a woman and putting her on ice, the body's first response to environmental change is severe vasoconstriction. And with women with Raynaud's, we have a stronger constriction response because it's a protective mechanism. For men, they'll constrict and then start shivering to induce heat. Women will just constrict.

Okay. If we put ourselves into that 55 to 60 degree water or 15 to 16 degrees Celsius, we'll constrict and then start shivering. So we'll get the same benefit. It's just the ice is too cold for us to start that shivering. So we need the shivering for thermogenesis to get some of those responses. So we don't need ice. We need cool water. I have been doing this all wrong.

Okay. If we put ourselves into that 55 to 60 degree water or 15 to 16 degrees Celsius, we'll constrict and then start shivering. So we'll get the same benefit. It's just the ice is too cold for us to start that shivering. So we need the shivering for thermogenesis to get some of those responses. So we don't need ice. We need cool water. I have been doing this all wrong.

Okay. If we put ourselves into that 55 to 60 degree water or 15 to 16 degrees Celsius, we'll constrict and then start shivering. So we'll get the same benefit. It's just the ice is too cold for us to start that shivering. So we need the shivering for thermogenesis to get some of those responses. So we don't need ice. We need cool water. I have been doing this all wrong.

And do you feel uncomfortable when you get in the ice?

And do you feel uncomfortable when you get in the ice?

And do you feel uncomfortable when you get in the ice?

Yes. Because shivering is an automatic... a response for survival because when we're shivering, we're increasing metabolic heat. So we're able to keep our core temperature elevated so we don't die. And it's a strong response that the body has to cold. For women, when we're vasoconstricting and we're trying to hold heat in,

Yes. Because shivering is an automatic... a response for survival because when we're shivering, we're increasing metabolic heat. So we're able to keep our core temperature elevated so we don't die. And it's a strong response that the body has to cold. For women, when we're vasoconstricting and we're trying to hold heat in,