First comes a surge of endorphins into your bloodstream, which increases acuity and fuels you with feelings of euphoria. Then there’s the flood of magnesium, which relaxes your muscles and de-tenses your body.
I've included this just as a case study in jacket length and fit. Both of these men are fairly tall and slim. First of all, jacket length: no matter your height, a good rule of thumb is to have the jacket sit at or just barely above your back pockets (i.e. your butt). Second, the fit - observe their pants. They've both got what some would call bird legs: long and lanky. Pants do not naturally fit well, but they've both had their pants slimmed and tailored, and the result is a great profile.