You can record action cam videos with sound by using a camera that has a built-in microphone or by attaching an external microphone to the camera. Make sure the microphone is positioned in a way that it can capture clear audio while you are recording. Additionally, you can also use a separate audio recording device to capture sound and then sync it with the video during the editing process. It's important to test the audio setup before recording to ensure that the sound quality is clear and free from any unwanted noise. **

It is unclear what is meant by "shaking near him." If you are referring to someone shaking near another person, it could be a sign of nervousness, fear, or excitement. It is important to consider the context and body language of the individuals involved to determine the reason for the shaking. **

Shaking is the rapid back and forth movement of an object or surface. It can be caused by various factors such as vibrations, tremors, or seismic activity. Shaking can be felt physically and can vary in intensity from mild to severe. It is important to pay attention to shaking as it can be a sign of potential danger, such as an earthquake or other natural disasters. **

The phone detects movement when shaking for Pokémon Go through its built-in accelerometer. An accelerometer is a sensor that measures the acceleration of the device in three dimensions. When the phone is shaken, the accelerometer detects the change in acceleration and sends this information to the game, which then interprets it as a movement command. This allows the player to perform actions such as throwing a Poké Ball or activating certain in-game features by shaking the phone. **

Sudden shaking can be caused by a variety of factors, including earthquakes, volcanic activity, explosions, or sudden release of energy from the earth's crust. It can also be caused by human activities such as construction, mining, or drilling. Additionally, sudden shaking can be a result of natural phenomena such as landslides or avalanches. In some cases, sudden shaking can also be a symptom of medical conditions such as seizures or tremors. **

Muscles stop shaking when the nervous system signals the muscles to relax and stop contracting rapidly. This can happen when the body perceives that the muscle has been overworked or when the muscle is no longer under stress. Additionally, proper hydration, nutrition, and rest can help prevent muscle shaking by ensuring the muscles have the necessary resources to function properly. Stretching and massage can also help relax the muscles and reduce shaking. **

The bed may be shaking due to a variety of reasons. It could be caused by someone moving around on the bed, a pet jumping on or off the bed, or even a nearby construction or heavy traffic causing vibrations. If none of these seem to be the cause, it could be a sign of an earthquake or some other natural phenomenon. It's important to assess the situation and take appropriate action if necessary. **

The leg shaking could be due to a variety of reasons, including anxiety, nervousness, stress, or even a medical condition such as restless leg syndrome. It could also be a response to being in a cold environment or a way of releasing excess energy. In some cases, the shaking may be a reflexive response to muscle fatigue or discomfort. If the shaking persists or becomes bothersome, it's important to consult a healthcare professional to determine the underlying cause. **