So, they have to do sit-ups.

所以他们要做仰卧起。

All right, can you show me the perfect sit up?

那你可以给我们示范一个完美的仰卧起吗？

LIke most of you have crunched up.

就像你们大多数人做过仰卧起一样。

It's just like doing sit-ups or push-ups at the gym.

就像在健身房做仰卧起或者是俯卧撑一样。

Most people would find it boring, like sit-ups, you know, like skipping rope.

大多数人会觉得很无聊，比如仰卧起、跳绳。

She said I could do that by doing sit-ups and jumping jacks for two weeks.

她说我要是把仰卧起和开合跳坚持两周他就相信我。

When I was in the special forces, we would do sit-ups in 115-degree weather.

我在特种部队时 在华氏115度的高温里做仰卧起。

My assistant, Tag, does sit-ups in the office during lunch.

我的助理泰格午餐时间时 会在办公室做仰卧起。

It's perfectly safe to float normally, reclining on your back with your head held above the seawater.

正常漂浮是完全安全的，仰卧着，头顶在海水之上。

In fact, there's a type of therapy called “positional therapy” designed to keep patients off of their back.

其实 有一种疗法叫作“姿势疗法”，它患者仰卧。

But, uh, before I take my shirt off, I just need like ten minutes to do some crunches.

不过，脱掉衣服之前，我需要先做10分钟的仰卧起。

'Sit-up' is an exercise in which you lie on your back and raise your upper body, then lie back down.

“sit-up（仰卧起）”是一种你仰卧着、抬起上半身，然后再躺下的运动。

The backstroke is a style of swimming where you lie on your back, but notice this other 'there'.

仰泳是一种游泳方式，你仰卧在水面去游，但要注意这里还有一个 there。

He said this training involved hundreds of push-ups, thousands of sit-ups and hundreds of curls every day.

他称这项训练每天包含数百个俯卧撑，上千个仰卧起和上百个二头肌卷曲。

So...what if pillows are making sleeping on our backs artificially too comfortable?

那么… … 如果枕头人工地让仰卧过于舒服，会怎么样呢？

In terms of just general strength, I think pushups are great, sit-ups, planks, squats are fantastic to throw in.

从一般力量来看，我认为俯卧撑是很好的，仰卧起，平板支撑，深蹲都非常棒。

Those with neurodegenerative disease spent nearly twice as much time on their backs while sleeping.

神经变性疾病患者睡眠时仰卧的时间约为常人的两倍。

He was on his back all the time.

他一直仰卧着。

A lot of people snore when they're on their back.

很多人仰卧时会打鼾。

It is common practice for Buddhist monks to sleep upright.

和尚仰卧是常见的习俗。