Nagi'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.

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This is the first video of Nagi's heartbeat, 23 years old.
She has clear skin, beautiful features, a slender figure, and is a beautiful and youthful woman.Not only is she beautiful, but she also has a fun personality and seemed to have a lot of fun during the shoot.
Apparently, she has never been diagnosed with any heart abnormalities during health checkups, but when listening to Nagi's heart, it usually beats normally, but there are many times when it suddenly starts beating strangely, like "dock, dock, dock, dock, dock, dock," and the pulse slows down. Nagi heard this sound, and she was also very freaked out. Not only that, but she also occasionally had movements that sounded like premature contractions.
Of course, listening to a normal heartbeat is soothing, but listening to an unusual heartbeat like Nagi's is also beautiful.
The contents of this video
・Self-introduction and heartbeat
・Reactions and heart sounds when listening to your own heartbeat
- The sound of your heart when you squat
- Heartbeat when stepping up and down
Heart sounds when compressed
Echocardiogram and heart sounds
・Post-exercise echocardiogram and heart sounds
Carotid artery pulsation and heart sounds
- Heart sounds when exercising while breathing through a bag
・The sound of your heart when you're doing that
The video is 52 minutes and 13 seconds long.

First, he gave a brief self-introduction and then put the stethoscope on me.
Nagi seems to be a little nervous, and her heart rate is a little fast at about 96 BPM.
And there are moments when the pulse stumbles.
As he begins to talk and answers several questions, his heartbeat speeds up a little, but after a while it suddenly starts to stumble, "dock, dock, dock, dock, dock," and then it suddenly slows down.
I have seen this type of movement several times. I think this is probably the normal functioning of Nagi's heart.
Also, at 7 minutes 28 seconds, there was a stumbling sound, "dock, dock, dock dock dock, dock," followed by what seemed to be a premature contraction.

Next, we asked Nagi to listen to the sound of the heart.
They say things like, "It feels slower than I thought," and "The rhythm has always been the same," but when they hear the stumbling heartbeat, they are surprised and say, "It suddenly gets slower!"
At one point, when the doctor put the stethoscope to me, he said, "It's a little fast!" and "It depends on the person!" (He didn't hear my heartbeat.)
I put the stethoscope to myself again and asked him to take a deep breath.
When I asked her to inhale, her heartbeat quickened, and Nagi tilted her head in confusion. On the other hand, when I asked her to exhale, her heartbeat suddenly slowed down after a stumbling rhythm.
When we ask Nagi to drink water again, although she doesn't notice, we hear a rhythm that sounds like premature contractions, ``dock, dock dock, dock, dock.''
When I finished drinking it, my heart suddenly started beating faster, and I was surprised, saying, ``That was fast!''
Immediately after that, it suddenly became slower and I laughed, saying, "It suddenly became slower!"
When we asked him to drink water again, his drinking speed increased while he was drinking, but after he finished, his drinking speed slowed down after a stumbling rhythm, and he said, "It feels like I'm stumbling!"

We asked Nagi to wear earphones to listen to the changes in her heartbeat during squats. At first, the speed remained the same and she asked, "Is it getting faster?", but as it gradually got faster she said, "It's getting faster!" and "It's so fast, so fast!" and her heart was beating at a maximum of about 120 BPM.
After the treatment, we ask the patient to place their hand on their chest to feel their rapid heartbeat, and they say, "Wow, it's beating fast!"
When I ask them to take a deep breath to calm their heartbeat, as they exhale, another stumbling rhythm occurs: "thump, thump, thump, thump, thump, thump, thump." Because it's so fast after exercise, it's even easier to notice.
Nagi was genuinely surprised and said, "Eh?" and added, "My heart is tripping!"

Next, we had them do some more intense exercises, such as step-ups.
As soon as we started, he said, "I'm tired!" and looked like he was already in pain.He looked at the timer I was holding and said, "There are still two minutes left," looking tired.
Towards the end, she was so out of breath that she could barely speak, saying, "It's so hard, haa, haa." But she still went full speed for the last 30 seconds. Immediately after she finished stepping up and down the step, Nagi's heart was beating at about 160 BPM, even faster than when she was doing squats, and it felt as if her heart was going to explode.
I put my hand on my chest and could really feel my heart beating so hard it felt like it was about to burst out of my chest.
Nagi herself seemed to be in a lot of pain, saying "Ah, I'm so tired!", and when she put on earphones to listen to her heartbeat, she was surprised, saying "It's so fast, so fast, so fast!"
I asked him to take deep breaths, but the speed didn't change and he said it was "much faster."
After continuing for a while, she gradually began to develop a stumbling rhythm, returning to her own unique rhythm. However, it is still a little fast, and she herself says, "Maybe I'm not getting enough exercise?"
Finally, when he sat on the sofa, he seemed to have calmed down a lot, but it was still a little too fast.

When I applied pressure, I could hear Nagi's heart rate rapidly increasing during each compression, and it seemed to be moving ****fully, as if in resistance. My hands were shaking in time with the heartbeat. When I released the pressure, Nagi's heart rate suddenly slowed down, then sped up again after a while, repeating an unstable rhythm. In particular, there was a "stumble" almost every time the rhythm switched from fast to slow.

For the cardiac echo and heart sounds, we placed the echocardiogram on her heart and listened to her heart sounds. The echocardiogram was performed twice. The first time, it was placed on the lower left side of her chest, so the entire heart could be seen, but the second time, when it was placed on the center of her chest, it could be seen beating on the right side of the echocardiogram screen. This is evidence that Nagi's heart is not in the center, but is slightly closer to it.
When they see the beating heart, they ask, "Is that a heart?" and when I point to show them where the heart is, they are surprised and say, "Wow, it's beating!"
If you hold your breath for a moment, your heart rate will slow down in time with your heartbeat, and when you start breathing again, your heart rate will increase. Seeing this, Nagi says, "It's really starting to move!"
After a while, Nagi-san, who was watching his heartbeat, commented on it and then it suddenly became faster again, and a little while later, after a stumbling rhythm, the heartbeat suddenly slowed down. Of course, that moment was also captured by the ultrasound, and we could see that the fast heartbeat had suddenly switched to a slow movement.

Next, we had him step up and down a step ladder so we could use an ultrasound to check his rapid heartbeat.
The video starts just before the patient finishes climbing up and down the step. After the step, when the stethoscope is placed over his heart, you can hear his heart beating so fast it feels like it might burst, and when the ultrasound scan shows his heart beating twice as fast as normal.
Nagi also said, "It's moving, it's moving! Amazing!"
When you take a deep breath, your heart rate slows down, as if the brakes have been applied suddenly, and then it suddenly speeds up again.The ultrasound image shows that your heart is being directly affected by the deep breathing.
Please take a look at the ultrasound footage, which has been recorded in separate videos both during normal exercise and after exercise.
Just looking at the ultrasound image, you can see that the heart rate has increased after exercise, and that it has suddenly slowed down when taking a deep breath.

As for the carotid artery pulsation and heartbeat, Nagi's carotid artery is amazing. At the beginning of the video, the left side of her neck is shown, and you can see that it twitches in time with her heartbeat just like everyone else's. However, when you look at the other side, the right side of her neck, you can see that the pulse doesn't match the heartbeat, but is moving at about twice the speed, and it twitches like someone with arrhythmia.
I was surprised because I think this was the first time I'd ever met someone whose pulse was different on the left and right sides. I wondered if they'd been exercising.
I recommend watching the video with the sound muted once, and then watching it again while listening to the heartbeat. You'll be surprised at how little connection there is between the pulse and the heartbeat.

When measuring the heart rate while exercising while breathing through a bag, the bag worn over the head is slightly larger than the one that can fit the head.
As a result, there is only a small amount of air in the bag, and since you are constantly performing leg-raising exercises, you are consuming a lot of oxygen, which makes the experience extremely painful.
At first, he breathes normally, but gradually his breathing gets deeper, trying to take in as much oxygen as possible. However, his shortness of breath doesn't improve, and the carbon dioxide in the bag continues to increase. After about a minute, he raises his hands and complains of discomfort. Instead of removing the bag from his head and asking him to rest, we loosen the bag to let in a little air and then reseal it.
After that, you continue exercising while breathing through the bag, and when you reach your limit, you loosen the bag to let in some air and then seal it again.
Her heart rate reached a maximum of about 125 BPM, and you can imagine her heart desperately trying to send the little oxygen she had throughout her body.
After removing the bag and letting him rest, he began breathing in fresh air, panting.
When I took a deep breath, my heartbeat went from rapid to stumbling, slowing down to a slow rhythm.

In the video for "The Sound of Your Heart When Doing That," Nagi answers some slightly naughty questions and then masturbates using adult toys.
There are several scenes where the person's heart suddenly starts beating faster, as if they are feeling good.
After a while, she said, "I'm coming..." and reached orgasm, her body trembling. After reaching orgasm, her heartbeat quickened, but after a while, it suddenly slowed down.

Nagi's heart and pulse were full of unpredictable movements, such as sudden "stumbling" and premature contractions, sudden changes due to exercise and deep breathing, and a difference in the size of the carotid arteries. Nagi herself was also surprised by these changes, laughing and showing her adorable reactions of amazement.

*The format is "MP4" and the size is 1920 x 1080.
*We have confirmed that the models are over 18 years old. Providing, transferring, selling, etc. to third parties, and uploading to other sites is strictly prohibited.
*The model's face is not blurred in the video.