Do pushing up...?

[crazYgeeK]

Could you please point out the incorrect ones in the following sentences:
1. I can do pushing up for 30 ones.
2. I can do pushing up for 30 times.
3. I can do 30 push-ups.
Could you please give me the more natural sentences to express such an idea?
Thank you very much!

[JohnParis]

What's your opinion, crazYgeeK?

One of the three sentences is very simple and natural.

John

[crazYgeeK]

What's your opinion, crazYgeeK?

One of the three sentences is very simple and natural.

John

Thank you! I think the #3 is the most natural of three ones but if so, that is the case we use the noun "push-up" to make sentence, I would like to know the natural one in which we use the verb form, could you please show your sentences?
Thank you very much!

[SoothingDave]

There is no verb form. We do push-ups.

[emsr2d2]

"To push up" is a [phrasal] verb but it has nothing to do with the exercise you're referring to.

For info, in BrE, you're just as likely to hear "press-ups" as well - "push-ups" is AmE but has probably crossed the Atlantic like many other things.

Congratulations if you can do 30. I can barely do 3!

[JohnParis]

Dear crazYgeeK,

A "push-up", in the context of the third sentence you proposed, is an exercise in which a person lies facing the floor and, keeping their back straight, raises their body by pressing down on their hands.
It's not a verb. "Do" is the verb.

OK, drop and gimmie 30.