I don't have time to exercise\ for exercise\ for exercising.

I've seen all of them, in diferents contexts, but that confuses me a lot.
I don't know which one to use in which situation? Could you give some examples?

Question

I don't have time to exercise\ for exercise\ for exercising.

I've seen all of them, in diferents contexts, but that confuses me a lot.
I don't know which one to use in which situation? Could you give some examples?

Answer

They’re all equivalent in meaning and can be used in any context. They differ grammatically in that ‘to exercise’ uses the infinitive form of the verb, ‘for exercise’ uses the noun, and ‘for exercising’ uses the noun derived from the verb [the gerund].

Answer

honestly all three versions are acceptable in the same context.

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