Well, that was a pretty fun demo wasn't it? Thanks, Steph for being our subject. So, let's recap what we did. We assessed Steph's VO2, her oxygen consumption. And her VCO2, her carbon dioxide production. And we did that assessment under two conditions, right? One when she was resting and then in the other condition actually during her exercise and at the end of exercise, right? Okay, so this resting metabolic rate, we often refer to that without, knowing that's what we're, we're referring to. Right? You'll say, oh my neighbor has a high metabolism, or my metabolism's slowing down now that I'm getting older, right? I can't eat as much as I used to be able to eat, right? So we refer to that resting metabolic rate pretty often, although we may not know that's what we're referring to. Why are your cells metabolizing, when your body is at rest? Yes. >> Because they need to function. >> Yeah. >> Still, even though we're not eating, or running around, or. >> So even though you're not doing like, some noticeable, major work. Your cells are still conducting all of the activities of life, and that means that cellular metabolism is going on all the time, right? And then as you become more active, what happens to your metabolic rate? Andre? >> It slow down. >> When you become more active? >> Oh, when, when you're doing activity it increases. >> Yeah it increases. So and then if you do just a little bit of activity it increases a little bit, if you do really strenuous activity it increases a lot. So there will be variations. In your metabolic rate, right? But, the resting metabolic rate is just the foundational metabolic rate that is require to keep you alive, right? Okay. So, we saw that when Steph actually exercised, what happened to her V02, her oxygen consumption? Nia? >> Steff consumed more oxygen. >> She did. So, her VO2 went up, and why was she consuming more oxygen? Lindsey. >> She was more active, so. >> So what was happening to C6H12O6? >> It was being converted to ATP. >> Yeah. Yeah. Yeah. So, she had to speed up her rate of ATP production, and we saw that then creating that increase in VO2. And what happened to VCO2, her carbon dioxide production? Andre? >> It also increased. >> It increased, and why is that? >> Because her metabolic rate increased, and that meant that she was producing more CO2 as a by-product of that? >> Exactly. So when she broke down the C6H12O6 in cellular respiration, the end product carbon dioxide and water showed up, and that generated the ATP she needed to do the activity. After we finally left her stop doing the exercise, what happened? Mia? >> We saw it come back down. >> Her VO2 and the VCO2 returned toward normal, right? Okay, great. Now if we were not specifically assessing this. But, did anybody notice what happen to Steph's respiration rate, during her exercise session? Lindsey? >> It increased. >> It increased. Right. Exactly. Yes, so she was breathing more frequently, trying to get gases exchanged in the lungs. We get to talk more about that when we get to the vital sign of respiration rate. We'll have a lot to say about that then. If we had kept Steph exercising for 15 or 20 minutes or maybe even 30 minutes. Do you think there would have been some change in body temperature? Would something have been going on? What do you expect might have happened, Margaret? >> She might have started sweating. >> Exactly. I she, we didn't see much sweat, when she was like exercising for us. But I think if we kept it going for a while, she would start to sweat, which would be an effort to maintain her normal body temperature, right? Something that we'll talk about when we deal with the vital sign of body temperature. So that was a good demo, and we'll be referring back to it. Thank you Steph for being our subject. And I hope you'll be back with us for temperature, and respiration rate.