Punctuation of headline

Tang I'd guess both lower and maybe even "Can"
So, fellas, what are the technis

Capitalize the first word of the title, the last word of the title, and all nouns, pronouns, verbs, adverbs, adjectives, subordinating conjunctions. Prepositions are only capitalized if they are used adjectivally or adverbially.

What: first word; capitalize (functions as adjective modifying 'sickness' so capitalize elsewhere also)
Sickness: noun; capitalize
Can: verb; capitalize
Be: verb; capitalize
an: article; lower case
Obstacle: noun; capitalize
If: subordinating conjunction; capitalize
We: pronoun; capitalize
Chant: verb: capitalize
Sincerely: last word; capitalize (adverb; capitalize elsewhere)

Wow, Con, guess I'm outa it

You can Google this stuff; there are various 'rules'. One site I saw says also capitalize all words 4 letters long or more.

Yea Con I had long considered this title cappin' thing a matter of individual pref

Thanks to both of you.

Tang notatall

Is there such an English word?

Tang it's well-established collo

Keep up the good q's

It's a phrase: not at all (a polite saying after being thanked)

Thanks, contrex.

Yea Con; Sorry Tang, w/esl's I should use more words

No, Dalehileman, you shouldn't join words.

Okay Tang but precisely what sort of words and in what context. If my collo bothers you please let me know and I'll tryta comply