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1. Do you say

Why don't you take a shower before sleep or sleeping?

2. Do you say

do exercise regularly or do an exercise regularly?

Have a beautiful day!
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1. Why don't you take a shower before you go to bed?

2. Exercise regularly.
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Comments  
Students: Are you brave enough to let our tutors analyse your pronunciation?
Hi, pal

After "before", which is a preposition, we shall use the gerund if we use a verb.
So we can say:

Why don't you take a shower before... sleeping?
... going to bed?

And, about the second question, I think you can say:

Exercise regularly.
Do exercises regularly.

Cheers!

;-)
renan torres-riveroWhy don't you take a shower before... sleeping?
                                                    ... going to bed?
I don't think you can say "... before sleeping'.
It should be '... before going to sleep'. 
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'Before sleeping' is grammatically correct and possible here, and no doubt it is occasionally used, but it is not the usual utterance.
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