He does 100 sit-ups each day.

他每天做100个仰卧起坐。

《柯林斯英汉双解大词典》

I know expert of that, but I think you can try lifting weights and do at least 200 sit-ups twice a day.

我知道这方面的专家，但我认为你可以试试举重并且做至少200个仰卧起坐，每天做两次。

youdao

Well, I am no expert at that, but I think you can try lifting weights and do at least 200 sit-ups twice a day.

我不是这方面的专家，但我认为你可以试试每天举重和做至少200个仰卧起坐，每天进行两次。

youdao

This kind of exercise includes things like lifting weights, or doing sit-ups and push-ups.

VOA: special.2010.06.08

The basic training involved sit ups and press ups for both athletes, and a 1.5 mile (2.4km) run for Mr Tebulo.

BBC: Athletes training at Imjin Barracks, Gloucester

Mr. White also suggests using commercial breaks to do push-ups, sit-ups, or burpees (also known as thrust squats).

WSJ: Before Outer Space, He Conquers Continents

Before climbing into bed at night, he would perform his exercises chin-ups, sit-ups, pushups.

NEWYORKER: Soldier��s Joy