习惯可以改变一个人，好的习惯让我们变得更好，坏的习惯让我们不由自主。如何养成好的习惯，改变自己？

Get a thrilling first-person view of a roller coaster ride, with sharp turns, steep drops, and high speeds.

Watch Dwayne Johnson showcase his vocal skills in this entertaining video of him singing.

A young man in a black hoodie takes the stage, singing to a large and enthusiastic crowd at a live concert event.

Watch as actor Will Smith savors a delicious plate of spaghetti in this casual, lighthearted moment.

Learn about the fundamental principles of electric circuits, including voltage, current, resistance, and common components like wires, batteries, and switches.

US President Donald Trump is seen eating a burger, a rare glimpse into his personal life and eating habits.