By pressing your chest down you initiate the wave-like motion. Press your chest up and down in the water as gently and rhythmically as you can.

下压你的胸部来启动波动动作。使你的胸部在水中尽可能轻柔和有节奏地上下运动。

And in fact, I couldn't feel anything from the center of my chest down.

实际上，我胸部以下的地方都没有了任何知觉。

I'm gonna hug the elbows into the side body, inhale in, exhale. I slowly lower chest down to the ground.

我要移动肘部到侧身，吸气，呼气。我慢慢将胸部降低到地面。

They're gonna wanna splay out like a push-up. Keep them hugging into the side body as you lower chest down.

它们要像俯卧撑一样张开。当你降低胸部时，保持它们在体侧。