当你有强壮的肌肉时，你可以做任何你想做的事情！根据这篇文章，人们什么时候对自己的身体感觉更快乐？
When you have strong muscles, you can do whatever you want to do! When do people often feel happier about their bodies according to the passage?
你应该能感觉到自己的肌肉在放松。
一直继续直到肌肉收缩，你要让自己感觉非常舒服并且气泡平稳而不间断。
Master this until the muscle contractions you are using feel totally comfortable and the bubbles are flowing smoothly.
应用推荐