The first is about running posture, the author interviewed a number of running enthusiasts, most of them recommend RomanoNatural running posture。

Romanov's natural running posture is easy to look good, because it is not the thigh force to push hard, but the whole body coordination to participate in the movement。The key to a healthy running posture is to pull in the abdomen and send the hips, and the legs naturally fall。If you rely too much on leg strength, it is easy to cause ankle, knee, hip and even lumbar injury over time。

Secondly, the daily running diet is healthy, 3 hours to 30 minutes before running can eat easy to digest food, such as fruit, sliced bread, yogurt and so on。Eating bananas, coffee with honey, etc. five minutes before running helps to improve the body condition。Do not eat high-sugar food, fast food, functional drinks and other foods before running, and do not run on an empty stomach, which will bring more burden to the stomach。

Third, the most important thing is to customize personalized health exercise prescriptions。Each person's physique is different, so the corresponding exercise prescription is also different。A good exercise prescription should integrate the physical fitness, physical state and exercise goals of the exercisers, cover the exercise intensity, activity content, duration, exercise frequency and other matters for attention, and comprehensively improve the physical fitness of the exercisers, including cardiopulmonary endurance, strength, flexibility and nerve potential energy。

To formulate a good exercise prescription, it is necessary to detect the health status of the body in real time, including heart rate, blood oxygen content, respiratory rate, etc。

Blood oxygen saturation directly reflects the oxygen condition in the human body, which is a very important physiological index。Normal blood oxygen saturation needs to be greater than 94%, when the oxygen supply is sufficient, the brain can fully activate brain cells, make people energetic, quick thinking, bring effective and fast work efficiency, while preventing emotional tension, ease the pressure of life, prolong aging。Long-term hypoxia, light will lead to organ damage in the body, heavy may cause death and other serious consequences。

At present, the main non-invasive health monitoring methods include Electrocardiography (ECG or EKG), Photoplethysmography (PPG) and video method。

In daily life, people usually use PPG measurement of smart wearable products to monitor health status in real time。The principle of PPG measurement is to emit light through a sensor (LED lamp) and measure the reflected light intensity through the skin to form a PPG signal to record and measure the changes in blood volume and blood flow in the body when the heart beats。Since the body's blood volume changes in sync with the heartbeat, PPG signals can also be used to monitor changes in heart rate。

Because the frequency band range of motion artifacts basically coincides with that of PPG signals, it is difficult to remove them even with some advanced signal processing techniques。Therefore, in the scenario of high-intensity sports such as running, it is a challenging technical problem to accurately detect human data such as heart rate in real time。

CS1262 is a high-performance PPG analog Front end (AFE) chip,Can target high intensity exercise scenarios，Accurately measure the waveform details of each human heartbeat，Provide the collection and analysis of blood oxygen, vascular elasticity, blood pressure, heart rate variability (HRV), respiratory disease judgment, mental stress, fatigue state assessment and other health indicators。

And as the first "health measurement" sensor chip technically adapted to the OpenHarmony ecosystem,CS1262Based on OpenHarnony, we can provide one-stop technical services for the whole process from import evaluation, development and design to mass production and after-sales，Provide proven design specifications and guidance，Provide a complete software algorithm integration scheme，Thus, the development efficiency of terminal scheme is greatly improved，Help customers to quickly develop application cases。

In the future, Xinhai Technology will continue to give full play to the advantages of the "analog signal chain +MCU" dual platform, build a health measurement series product portfolio, with measurement algorithms, wireless connectivity and supporting standard solutions, to achieve the integration of intelligence and health, and help customers create smarter products。