Dr. Bill von Hippel

Don't exercise.

Don't exercise.

Here's the thing, eating might be the exception. The data also show that if you, like imagine you stuff your face full of fatty foods and all that kind of stuff, exercise is exactly what you should be doing now after you ate. Use the... fuel you process. Don't just store it. And so food is something we need.

Here's the thing, eating might be the exception. The data also show that if you, like imagine you stuff your face full of fatty foods and all that kind of stuff, exercise is exactly what you should be doing now after you ate. Use the... fuel you process. Don't just store it. And so food is something we need.

Too much food is obviously a bad thing, but I don't count food in the naughty behavior list. And so I haven't actually, everybody eats every day and I don't have good data on how much they've eaten. But what our data do suggest is that going for a walk, even just a walk, like zone two is fabulous. Even zone one is good. Going for a walk, doing stuff after you eat helps you just feel better. And

Too much food is obviously a bad thing, but I don't count food in the naughty behavior list. And so I haven't actually, everybody eats every day and I don't have good data on how much they've eaten. But what our data do suggest is that going for a walk, even just a walk, like zone two is fabulous. Even zone one is good. Going for a walk, doing stuff after you eat helps you just feel better. And

Yes. And what we have is, fortunately, we've got thousands and thousands of people, so big data sets, who log alcohol relatively often. They don't drink every day. And I can even show you what the pattern looks like. People don't drink much Monday, Tuesday, Wednesday. Thursday, they have a drink or two. Friday, more. Saturday and Sunday, more, and then go back.

Yes. And what we have is, fortunately, we've got thousands and thousands of people, so big data sets, who log alcohol relatively often. They don't drink every day. And I can even show you what the pattern looks like. People don't drink much Monday, Tuesday, Wednesday. Thursday, they have a drink or two. Friday, more. Saturday and Sunday, more, and then go back.

But they also exercise at different points across the week. And so some people, those two things happen to hit at the same time. And sometimes they don't. And what I try to do in these analyses, what we all try to do in these analyses, is look within person. Because if you're the kind of person who exercises when you drink and I'm not, well, who knows what else differs between us.

But they also exercise at different points across the week. And so some people, those two things happen to hit at the same time. And sometimes they don't. And what I try to do in these analyses, what we all try to do in these analyses, is look within person. Because if you're the kind of person who exercises when you drink and I'm not, well, who knows what else differs between us.

So what I really want to know is what does Steven look like when he drinks two drinks on days that he also exercises the same as usual, less than usual, more than usual. We want to make it all against what you usually do. And there we see these effects very clearly.

So what I really want to know is what does Steven look like when he drinks two drinks on days that he also exercises the same as usual, less than usual, more than usual. We want to make it all against what you usually do. And there we see these effects very clearly.

You know, if you look at how much sleep people need, the argument is everybody needs the same basically on average, right? But some people need a little less and some people need a little more. I think men need less sleep than women. I don't know that yet, but there's lots of reasons to think that.

You know, if you look at how much sleep people need, the argument is everybody needs the same basically on average, right? But some people need a little less and some people need a little more. I think men need less sleep than women. I don't know that yet, but there's lots of reasons to think that.

First of all, hunter-gatherers, when you look at the data they've gathered with Actigraph, where they put a motion capture on hunter-gatherers, the men sleep about 20 minutes less than the women do. Now, that's not significant in their samples because they have small samples of hunter-gatherers. When we put these things on zillions of people, we see men sleep about 20 minutes less than women do.

First of all, hunter-gatherers, when you look at the data they've gathered with Actigraph, where they put a motion capture on hunter-gatherers, the men sleep about 20 minutes less than the women do. Now, that's not significant in their samples because they have small samples of hunter-gatherers. When we put these things on zillions of people, we see men sleep about 20 minutes less than women do.

Yeah. And so we see the exact same thing they see, but it's wildly statistically significant in our data set because it's so huge. 20 minutes is a lot. Now, here's the thing. If men don't need as much sleep as women, why is that the case? So recently, now this is hot off the press. I can't promise you I'm doing it right, but I believe I am.

Yeah. And so we see the exact same thing they see, but it's wildly statistically significant in our data set because it's so huge. 20 minutes is a lot. Now, here's the thing. If men don't need as much sleep as women, why is that the case? So recently, now this is hot off the press. I can't promise you I'm doing it right, but I believe I am.

Our data suggests men sleep more impactfully, more effectively than women. That for every hour of sleep that a man gets, he gets a little more bang for the buck on his recovery than women get. I have no idea why that might be. It could be they have bigger slow waves when they're in slow wave sleep. It could be a thousand different things. I don't know.

Our data suggests men sleep more impactfully, more effectively than women. That for every hour of sleep that a man gets, he gets a little more bang for the buck on his recovery than women get. I have no idea why that might be. It could be they have bigger slow waves when they're in slow wave sleep. It could be a thousand different things. I don't know.