Rio's heartbeat 1

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

Thank you for viewing.
This is Rio, 20 years old, with a heartbeat of 1. She has just started her modeling career, and is genuinely 20 years old, making her incredibly young and full of freshness. In fact, she just turned 20, so she's practically still in her teens. She has a very friendly and cheerful personality, like a little sister.
Furthermore, Rio seems to be extremely interested in the sound of the heart, and she approached us about it herself this time as well. We were excitedly talking about the heart throughout the entire photoshoot. It makes me so happy that a young woman like Rio is so interested in the heart.
The content is,
Self-introduction and heartbeat
- Reactions to hearing heart sounds and heart sounds
- Heart sounds when chest is compressed
- Heartbeat sounds during and after step-up exercises
• Electrocardiograph and heart sounds
- Electrocardiogram and heart sounds while exercising with a bag over your head
- Blood pressure and heart sounds when lying down and sitting up
Echocardiography and heart sounds
Echocardiography and heart sounds after exercise
- The sound of your heart when you masturbate
That is the case.
The video is 51 minutes and 29 seconds long.

After they introduced themselves, I immediately began using the stethoscope on them.
Your heart rate is a little fast at around 87 BPM, and it seems you are feeling nervous. Rio's heartbeat has a very unique and unusual rhythm, with sudden increases and decreases in speed.
She answered questions such as, "Are you embarrassed to have your heartbeat heard?" and "If your boyfriend had a heart fetish, would you let him hear your heartbeat?", and her heart started beating faster the moment she answered.

When she heard her own heartbeat, she reacted excitedly, saying, "It's beating fast, and it's such a fun sound!" She also seemed to think her heartbeat was a bit fast, and it got even faster as the session progressed.
I moved the stethoscope around and tried placing it near the pulmonary and aortic valves, and the patient responded by saying, "I can't hear much," and "I can hear something faintly!" as they listened intently. The clearest sound was definitely from the left side of the chest.
Next, we had him drink some water. His heart rate was already fast before he even drank, and it accelerated even more the moment he drank. He said, "It's gotten a little faster!" and then it slowed down again, clearly showing the intensity of the fluctuations. During the final deep breath, his heart rate was very fast when he inhaled ("thump, thump, thump") and calmed down slowly when he exhaled ("thump, thump, thump"), clearly demonstrating sinus arrhythmia.

We listened to her heartbeat while compressing her chest because Rio herself wanted to hear it. She seems really interested in the sound of heartbeats. If we were together, I'm sure she'd let us listen to each other's heartbeats every day.
During the first compression, the changes were subtle at first, but then it suddenly sped up. For the second compression, the chest was zoomed in on. The rhythm was unstable, sometimes fast, sometimes slow, and it slowed down when released. The third time, it started fast but gradually slowed down, showing completely different rhythms each time. I think this is because Rio's heart is inherently unique. Finally, we also got his thoughts on the changes in his heart during the compressions.

During and after the step-up exercise, Rio, who doesn't usually exercise much, had a heart rate that was already accelerating within seconds of starting. Her breathing became increasingly heavy, and her heartbeat became as fast as a small ****'s, as she worked hard while saying, "It's tough!"
For the last 30 seconds, she moved at full speed, and immediately after finishing, her heart rate was pounding like crazy, close to 170 BPM. When I asked Rio herself, she was breathless, saying, "Haa haa, it was really fast...haa haa." Even at the young age of 20, it seemed to have been quite hard, and when I put my hand on her chest, I could feel how violently her heart was beating, as if it was about to jump out.
I tried to calm him down with deep breaths, but it didn't subside immediately, which is proof of how much stress he was under. He gradually calmed down and sat up on the bed, and finally lay down, but his heart was still beating faster than normal.

For the electrocardiogram and heart sound test, the electrocardiogram was attached while Rio was lying in bed. The electronic sound and the actual heartbeat were beautifully synchronized, and the waveform displayed on the tablet was exactly Rio's heart.
Her heart rate was around 78-80 BPM, which was much calmer than immediately after exercise. This is probably Rio's normal heart rate. We compared it to the average for women, and together we checked the changes in her heart rate during breathing and when she held her breath.
After holding her breath for one minute, she had some extra time, so we filmed her holding her breath for another 1 minute and 30 seconds. She resumed breathing just as the breath-hold ended, but her effort caused her heart rate to spike, which even surprised Rio.

In the electrocardiogram and heart sounds recorded while exercising with a bag over the head, the participant performed leg raises while sealed in a bag. Their heart rate quickly exceeded 100 BPM, and their oxygen saturation dropped to below 80.
When she raised her hands, I loosened the seal for a moment, but when I resealed it, I heard heavy breathing sounds like "haa, haa, haa," mixed with erotic moans like "aah," which echoed throughout the room. Her heart rate exceeded 120 BPM and accelerated rapidly as if to compensate for the lack of oxygen. When I loosened the bag, I could clearly see her heart rate dropping.
Finally, they sealed the bag as tightly as possible, and even after removing it, they continued exercising, showing incredible effort.

During the blood pressure measurement using the blood pressure monitor, measurements were taken twice: once while lying down and once while sitting. Since it had been two years since her last measurement, she was concerned that her blood pressure might be on the high side. However, we were surprised to find that her systolic blood pressure was indeed over 120. This number is quite impressive for someone so young. While sitting, her systolic blood pressure decreased, while her diastolic blood pressure increased.

The echocardiogram allowed us to clearly observe how Rio's heart, which has only been beating for 20 years since birth, is beating powerfully like a pump. The size of Rio's heart on the screen was about the size of her fist, and she exclaimed, "Wow, isn't that amazing!", "The range of motion is incredible!", and "It's beating so fast!" upon seeing her own heart for the first time.
When you hold your breath, your lungs expand and hide your heart, but you can see it beating through the gap, and you can clearly see the change as your breathing speed returns to normal when you resume breathing.

During the post-exercise echocardiogram, the patient lay down immediately after two minutes of step-ups, and from the moment the probe was applied, a violent "thump-thump-thump" vibration was transmitted. On the screen, the heart was pulsating almost twice as fast as normal, almost like a spasm, and combined with the heavy breathing, it was very erotic.
Rio was also surprised, saying, "Isn't it incredibly fast!" and "It looks like it's going to burst!", and we carefully watched the ultrasound image until she calmed down with a deep breath. This ultrasound image is also available in a separate video, so please check that out as well.

The video, which captures the sound of her heartbeat while masturbating, shows her completely nude, having removed all her swimwear. She lets out a moan the moment she inserts the adult toy she's using for the first time, and her moans grow louder as she experiences pleasure. The insertion area is heavily censored with mosaic blurring.
My heart rate also accelerated the moment I inserted it, and I could feel my body reacting honestly. It continued to speed up during masturbation, and my heart rate increased especially when I felt pleasure.
Finally, she came, trembling uncontrollably and yelling "I'm coming, I'm coming, I'm coming!", and after she came, her heartbeat gradually calmed down. It seems that even 20-year-old Norio's heart reacts like this when she masturbates.

*The format is MP4.
*We have confirmed that the model is 18 years of age or older. Providing, transferring, selling, or uploading to other sites to third parties is strictly prohibited.
*The model's face is not blurred in the video. There are no heart or other stamps.
*Please note that some parts of the video may appear blurry.