Dr. Rhonda Patrick

So you're talking more at the elite level where they're really like the rowers or these runners that are incurring more damage on their muscle.

So if the cold water immersion is causing vasoconstriction, it's preventing the muscle perfusion, right?

The question is, how long does that last?

So the norepinephrine is the hormone that is regulating that, as you know, and that does go up even after just two minutes in cold.

So the question then goes, well, how long does that last?

So is it an eight-hour response?

Do you think it would be eight hours that it's going to be affecting people?

Or at the very least, it would be interesting to do a cold water immersion where it's not immediately after resistance training.

It's, you know, six, eight hours, maybe the next day.

Yeah, I guess the question is that, you know,

If you're doing resistance training and you wait six to eight hours after that training, will that cold water immersion blunt your gains?

You said maybe a little bit, maybe not.

Of course, yeah.

I want to shift gears and talk about collagen last because you've also been getting involved in some of this research and I'm very interested in hydrolyzed collagen powder for skin, for example, and skin aging.

And so I wanted to ask you if you think there are effects on supplemental hydrolyzed collagen powder that are independent of the muscle connective protein, which...

I think, if I'm correct, does not have a huge amount of collagen.

But do you think there are effects in maybe other tissues, like the joints, skin, for example, bone?

It's interesting, there's been a lot of people that think that hydrolyzed collagen powder doesn't actually go to cartilage, but there's been some animal studies that have radio-labeled hydrolyzed collagen powder, and it does go to cartilage.

Do you think that's applicable, like that's translatable to humans?

What about the role, the signaling?