the more

[navi]

Can one say:
1-If you work out with your friends, you'll enjoy it the more.
instead of:
1a-If you work out with your friends, you'll enjoy it more.

Sentence 1 sounds strange to me. I know the structure 'The more... the more', as in 'The more you work out, the better you'll feel'; but we don't have that structure in 1.
I saw something with the same construction as 1 in print. Was it a typo, or maybe an archaism?

[Lucretia]

Hello navi,
I'd consider it an error.

[Pete]

Can one say:
1-If you work out with your friends, you'll enjoy it the more.
instead of:
1a-If you work out with your friends, you'll enjoy it more.

Sentence 1 sounds strange to me. I know the structure 'The more... the more', as in 'The more you work out, the better you'll feel'; but we don't have that structure in 1.
I saw something with the same construction as 1 in print. Was it a typo, or maybe an archaism?
No, you do hear "the more" used in this way occasionally. I think it may be an abbreviated form of "all the more"; you can find that phrase at:
http://dictionary.cambridge.org
by looking up the keyword "more".