You literally don't know what you're talking about at all, why are you pretending like you do? It's not some obscure secret thing that nicotine has cognitive enhancing effects. Here's even more evidence with institutional backing.. "Substantial evidence demonstrates both nicotine’s addiction liability and its cognition-enhancing effects." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3710300/
that being said it is also extremely useful for forming habits. so if you use it as a tool to help build a going-to-the-gym habit then in a sense it made you strong