Rio's heartbeat 2

* This work is fictional, and all persons appearing in it were 18 years of age or older and were filmed with their consent.

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This is Rio, 20 years old, with a heartbeat of 2. She has just started her modeling career, and is genuinely 20 years old, making her incredibly young and full of freshness. Moreover, she just turned 20, so she is still practically a teenager. Her personality is very friendly, innocent, and she has a younger sister-like character.
Furthermore, Rio seems to be extremely interested in the sound of the heart, and she approached me about it this time as well. We were excitedly talking about the heart throughout the photoshoot. It's truly wonderful to see a young woman so interested in the heart.
In Heart Sound 2, we incorporate more electrocardiogram (ECG) imaging.
The content is,
- Heartbeat sounds when standing and when squatting
- Heartbeat when lying down
- Carotid artery pulse and heart sounds
- The sound of a heartbeat when inflating a balloon
- Electrocardiogram and heart sounds when chest is compressed
- Electrocardiogram and heart sounds during squats
- Electrocardiogram and heart sounds during bag breathing
Electrocardiogram during smoking
Electrocardiogram and heart sounds during masturbation
That is the case.
The video is 39 minutes and 19 seconds long.

To hear the heart sounds while standing and squatting, we first had the patient listen to their heart sounds with a stethoscope while standing.
When Rio was sitting, her heart rate was a little faster, but when she was standing, it felt surprisingly slow. Before the shoot, we had told her that her heart rate tends to be faster when standing, so she was a little confused by the result, saying, "Huh? I feel like my heart rate is faster when I'm sitting!"
There wasn't much change when she squatted, and in fact, it seemed to have gotten a little faster. However, when she stood up again, her heart rate increased significantly, showing a normal response just like the other models. I was relieved to confirm that her heart rate was normal, slowing down when she squatted and speeding up when she stood up.

When lying down, your heart rate is faster than when you were standing, at around 100 BPM. That's quite fast for someone lying down. Is it due to your youth, or is it because Rio's heart is special?
Stretching made her run a little faster, but since she was already fast, Rio didn't seem to notice much of a difference. Her stomach rumbled several times during the run, which made Rio laugh.
Finally, when we asked Rio to stand up from the bed, her already rapid heartbeat became even stronger and faster, and Rio herself noticed, "It's gotten faster here!" The pulsation of her carotid artery and the sound of her heartbeat clearly showed that the base of Rio's neck was beating with a distinct thumping sound. It was clear that blood was being pumped continuously, as if she had another tiny heart.
The sound of the heartbeat when the balloon is inflated was recorded at the last minute after filming. This is because Rio found the balloon that she always carries around for use in filming and suggested, "I want to record the sound of my heartbeat when I inflate the balloon!"
Therefore, instead of wearing a swimsuit, she was photographed in her underwear while in the process of changing. Rio said she had never been good at inflating balloons before, so at first it didn't inflate easily, but on the second try she managed to get air in and it inflated nicely.
The moment he inflated it, his heart rate suddenly increased, as if he had just finished exercising. He must have been putting a lot of effort into it. He even inflated another one for a separate shoot, and he looked very happy.

For the electrocardiogram and heart sounds during chest compressions, the patient lay down with the electrocardiogram attached, and compressions were applied.
Rio's heart rate was irregular, sometimes fast and sometimes slow. During compression, her heart rate initially decreased, then gradually increased, and then dropped sharply upon release. It then rose again immediately, showing considerable instability due to the compression. The changes were clearly visible on the electrocardiogram. The electrocardiogram and heart sounds during the squat allowed us to hear her heart sounds while simultaneously checking the electrocardiogram.
As he started doing squats, his heart rate gradually increased, and he happily watched his heart rate rise, exclaiming, "Here it comes, here it comes!" Immediately after finishing, his heart was pounding at over 140 BPM.
I asked her to take deep breaths, but her condition didn't improve immediately; it seemed to calm down gradually. It appears that the exercise was quite strenuous for Rio.

For the electrocardiogram and heart sounds during bag breathing, participants were asked to breathe while wearing a sealed bag over their heads.
The bag is semi-transparent, so I couldn't see the changes in my heart rate myself, and Rio really wanted to see it. It seems Rio is quite the heart fetishist.
Initially, the patient was breathing normally, but gradually increased their deep breaths, and towards the end, their breathing became labored and breathless. This is clear evidence of a significant decrease in oxygen. The electrocardiogram clearly showed that their heart rate increased and their oxygen saturation decreased accordingly. Even young people experience an increase in heart rate when they are oxygen deprived.
After removing the bag, he was disappointed to see that the oxygen saturation level hadn't dropped as much as he'd expected, but from my perspective, he had done a great job, so I was very satisfied.

For the electrocardiogram during smoking, Rio, who recently started smoking, was asked to smoke while wearing the electrocardiogram. No other instruments were used, so no heart sounds were recorded.
My heart rate started at 90 BPM, but as soon as I started smoking, it jumped to 100 BPM and continued to rise, exceeding 110 BPM. It's clearly the effect of smoking.
Even after finishing the puff, the BPM didn't drop for quite some time, never falling below 100 BPM until the very end. Rio was also surprised, saying, "It's not going down! That's crazy!"
Seeing the changes in his heart rate makes it clear why smoking is said to be bad for your health. By the way, I asked him after the shoot if he would quit smoking, but he said he wouldn't.

The electrocardiogram and heart sounds during masturbation showed that before applying the vibrator, it was around 85 BPM, but after applying it, it exceeded 90 BPM, making it very clear that I was genuinely feeling it.
The heart rate changes depending on how and where the device is applied, and it seems to feel particularly good when it exceeds 90 BPM. Thanks to the electrocardiogram, it's easy to see exactly when they're feeling it.
She reached her climax in the end, and when I said afterwards, "I can see from the numbers what you were feeling," Rio looked incredibly embarrassed.
My voice is also included in the recording. I usually try to edit it out as much as possible, but Rio's embarrassed reaction was so good that I decided to leave it in this time. If you don't mind, please enjoy her reaction.

*The format is MP4.
*We have confirmed that the model is 18 years of age or older. Providing, transferring, or selling to a third party is prohibited.
Uploading to other websites is strictly prohibited.
*The model's face is not blurred in the video.* There are some scenes in the video where the image is blurry. Please be aware of this beforehand.